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 0x6c614d7fe9d7948d4e7e25da83fe486a0ebd99d47def9041d2892cc442fc52f5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b9eb221-9a6b-4444-a457-70cf898fd6b5.json and https://artists.proofprofile.net/proofs/artist/0b9eb221-9a6b-4444-a457-70cf898fd6b5.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 0xdc386e48a944878da3c64ab787e506dfefe2fb6beb6164fbcd2e42ce2f5c0563. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/SE6XW2367731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bfdbe2931aa9495724118014c0fdefea96d2f1c1b6bfcffae71804ea456c86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:37Z), 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/SE6XW2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe282282e10a9973a31c0e02053eead8616d73153b5ccc15b60ec8cba0010dcf3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6XY2330907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c59895feacf4b0f9edf40921e6dbe509b274339e130d803bc05416e98d2383. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XW2332382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e412d9fd90f0cc3303fd163a1fbd54c0b806da42c08b390658ea1cfefe2acb. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/SE6XW2393037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c25231fc3ac1c18ab683c9f3d1b1572855507f00ad338717473302992562037. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6SA2372650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea11697a21eea5ad2f4aae15a6555a8ef1576bbb0b2a1bf6a8a560673835e61. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:11Z), 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/SE6SA2397987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885222893acbac4fd2142affce23dabcefee295eff380823cb5e3765356bdc73. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SE6XW2399991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa011dd7bcbea336879f35ecb2f66107cf10e366c5b26e9f2f38b9afb7f50aad0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:54Z), 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/SE6TI2350934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d3ee1fd827de24ce127b404b569845e0427fb57525a201d94285353b3b6f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6XW2349432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf91249a80608cf664ee8d5cdbd457ce4985e8063b5ab06b68729b720f12e65. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:46Z), 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/SE6TI2385936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb865989484b8c5529d2ba3c1f7c905133555c873fcdb07e6e73e779f90d43c33. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAMM2273713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd8cf77dbf6a8472786bd4756224b8aaa0cdf37b3ffeb2085e679f5b1485d40. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:48Z), 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/ESA012448856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b854b49b37ad2bdc9bce85328f36ce1b523b3048dcf150f8c66fc18decab2b. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ESA012455811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35cbd6890950b5b5cd1e998dedbbf05936dddd1a1758dda6e19c982899e6380. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA012455812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b1a3a59dcc8ae2a7165b9b70cb4cbb150ebdc9ac44955cb766fc5f04759404. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:22:34Z), 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/ESA012455813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565efa77f83a4885987dab321810e540b19efef7271f8a7b5ce3c3c9278f6ca0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:02Z), 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/ESA012467792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa210975c2182833fc97851dd2821581c0e5d774a60ce79fe555a5ee5b81c50. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA012467793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354f335cabf2187e7abe87181192064eb3d82467e70b2cb01f2b33e14ab6517. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA012467794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d26fe5a001a65ba8f78af79e512c0326cffea233a52b4756a85ef7a625b8d0. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ESA012467795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cfde138a7d46a10b2f1dd846e94ca8d9a8299d0235a68e7da184014123ebf0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ESA012467796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96357e2df6e171433fb317c5aafbab8d2018fe7fd54487d4f331ca1c8107d43e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBLFP2546226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d5c58fcedf7e985c5ac660c4558f8cf2bcfc6dac5637586037fb9a83b74c57. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2546227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04324ba27b090d7ac724fd13c875ef7b5172e5b7e3811ff22f9347027801fe47. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBLFP2546228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952744233ee8db46b0164f6ce673e4b99fd576708c9e267b1f41a0ced79ce173. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBLFP2546229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868b4d9f09675ba15111d7939e231385f77ec5a1d1dcb60b6616cc49d720d26c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2546230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d041f09cd6e49a8d8be56a75a05f61857b100ab541b8b69cb98966191cda51. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBLFP2546231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7357857640116e7a6f96be0b835cfd9a484967e8b6f0a16dd8eaace31c58c325. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2546232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7730d5e7f686e99aaa6640ae557fdd02a26a12b3d0d9139055acb2c2244e04a7. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBLFP2546233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b3c7afb8aa6506a5ec1bedb57feefb06ca6515fbbd5059219b2128cbd85a38. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLFP2546234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e07888f949b2a3b186ab597b13ba23c0e482f9fdb8364bf73ac1b213a6e3e5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLFP2546235.