1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa218caa84fcdd615fcfa0dec28c941fee0dd4a85b70da49d673d78ab095e0716. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a30abee-ceaa-42c4-b0cb-a2715e51b0a6.json and https://artists.proofprofile.net/proofs/artist/6a30abee-ceaa-42c4-b0cb-a2715e51b0a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1bd07557f046b15e43c52e62f33a3800f2f16d782ce7cca84c50f49c4eeeb1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0e677a74c5885a03fe1bb2bfcde752db1dcf9faf2157fad91a3cef44fe7f04. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7139fe474613b65c941f1cf48d1ec91318f130a22212604592cdacb0dace062. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94620540e791e8a64844cb88ee1bc880bed8e8d5d448f40ebdd6b3fa9e0d05cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cb3458f3cf5c14b794ee402ace5ee402bb5a66dc951332715accb37d1ed220. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7552694dae6fb20d8bb81bf61ac12da80def1edf7d6ca632b9ddcce33a034349. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ee99e293f3e42a6310c2f838d5fa00743a04ae65860ff28eef9bbfb216dbb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eeddc6ef65a81bb2ce27a2191d2d96b5c9d5b1a7251181cd57ed003ce57f84. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e41e9d10008f5437b39e8dea5a73c8351957cdd842e303436e91d1b189968b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9a1dba9f9115ffa42853c03f37a84cfaa64225e05bcd3f9b307ec01ef92390. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5f38ad99ea0a99088daa091b95bd71a188830477b654922ef010860db6cbf9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a17d84380fa9df652cb23849df973098c39a4c4ca5b099462291c332fb23f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff365caa446a9352f068fba278b432a5c6ff6731c7e6554cd27f2621cd3cf0eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a6e3401b1423df09813c2826c03a99231b0fedba24d92339bd7a4654a6cf8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c4038e820e7ce3192ac32c5d87304fc55c7f3c8a7f90d959b43537bcbc5e67. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59854458931ff5f144dcf5a3959037029defd6c8842bb912dd7d81250d329500. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a4d8f10681904f35d423b05ea8c6ba29a282864b092895d940f70166e6fff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5355ee7e4ff4178249a170eccb89e36c258c7db77b7d08244b09af66e0a93c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CACWV2330837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb83c6f6451a78c8d09dcc2905ce6ca13cfb89ab3be3c6136ca5b4d0e2dede. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9403fb2fd4c7a8c2ebd57f510f17c1d3d8eb2b4312a981356befc528cceb44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3897f707a7852cac97d97198a6a4eb9d82a3824f4cdc00185f31703a5bc893. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58e00a5cf5a8e9bee928d78463600665e7b8dd389fb3586c37ac930cfb3a478. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c75de43ffaaa562feb83daa509635d9cab62e2bab37f963c1ad7f4719ae429. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c37bde2963c91baea95379a131cd9515c09b10ef99871eb7d0afcfe2b3a72e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c34d802458acaf1efd743200f66bcea9e90dc9650afd407dd18725a7877a70. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c278308414f9766078a5dff3a0ccc4a340d782abf87235f51db5569ebd3727. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b240c98ca5baa6a2b715fa59bb16a374084bb7b740873a1dde7317a9bfe786. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cbaa281d3ed8353f211edf344cda2a8026ecda9309dfa618d969ef5f54c68b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffca9a3636d81df0ad73df6fac3086ca9467d22ace53fc1956dbb736364788d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9af5e71a8cb8fb71f010325e895fa415653bd9788bab873e00664db701ac32. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3144ee23f915afa6bac83f6707367e58d70c564777135ca1a7660944d2e6ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd154de83f303fc0f0bcbb5efe19cb933507b48ca9009bab756e2fed527603e2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d972c463c2e795cd3b6dc8603ae9ccd860cf8e6a1644e8f27b0291879eb34. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a0d851528bb4351e3b7d1ae2b89a1313a83b3264a8b1dd412387ba118b2cae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41b7415536082c8a9bbd4c172324477ec2927827e96a3684f1b278573d68777. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca967e105a47afb3c864fea42bdada3e1dea56f1ea33c40b38b7735a6bbe75e5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cdf2e62d9e36baf589a7f085ee9957bffe18afa322698679f0e499c76f8cd2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc13100371a5e0959c54a621dbcb7cade559f192a9697d8f785d7c3763f979d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ff2715fc6be9159cf381771803f67f906c2e244435874a12cbfba6279e7d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9048848e63ccca3bd427bb21a0c3712b9ce5730b1e952ace570411b00476810f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3037fb6f2c7b94d67738a00cc78814a740bf134f8cff5200f25a954c25818ec9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb3ab49d6e28c692020dd355a0258a6322397edf1c7cbaeeb80d13515f5fab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbb65ac7e2bb1d42cd59a32724e4f69e1c93ad4fad29a7193753eabff8dd84c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f80a919db775701d3021b1600da14dbff90945cf7aad417ef0b35203902df9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643bd7636515fc19c20bec4d52163e8f6cc5ada70c24dfeee7dee85f652c97dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16556165fa1b8b256d772739f1cff8072cd4b20af6d9b3ec7311f7ee3448640c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754590d4262dab1ba328fec3292aa83c2d177f53a459bc430113893d8e42248c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370809.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7dd6a9148d34567f4a465de5dd2637aef318bbfe2c555170a12f1878886060. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAHQJ2370794.