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 0x3ff82269f81bf5149027c1c975d4c0e40e58ad8e3024bbab2f98bb7032340bea. 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/d5569142-af6c-4215-8b3a-2cb2b17c78f2.json and https://artists.proofprofile.net/proofs/artist/d5569142-af6c-4215-8b3a-2cb2b17c78f2.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 0x98763a0c718c7cc7ce0e496c6d835300bc5ab45a88a6f03c6b67fc4e225927c4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/RSA1X1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041dbedbad04b6deb56ed492b573cd25303dd4df41f1f0e5041c2bb783b48773. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RSA1X1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b338f55dc4cb083e22208e50c9910d767b999835797a688fd816072e094ecc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RSA1X1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d86923ed9c2e14524dfda3c80a5463080c55df079814a60e739fe834be43a64. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RSA1X1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb8a00797bab7c867d1dc99b3f4344b6091bdba6021ec9e705749bd8232308. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RSA1X1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c0ef9caf58fef701e30669a0ba4fcd90aab6c54eb7d1f5cfe7a1990ad945ca. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/RSA1X1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c375e69f2edf5ba89075d043d9e9928615ec3b1649443f5201a5136058fcb. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/RSA1X1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eff7da04c8d35c480b8980ffe05c19d64239952c4487d8a97bf3fe26095460. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AT2DY2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b25a34aee2da3468cfc787db045f380cdee001c1043a5b6b800a0966c99fe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AT2DY2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5d8bdc4a7e19f66eab238abd129af1e7393643db600502ea14c4d48047945. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AT2DY2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc3fb8e0e9c412c56084b6ef923e907e5ff3d7c96351a8ff259e74a5b599b0f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:15Z), 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/AT2DY2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd563e9a6a10721b75d179571f31c95ae9870d8c05d64e583006a6cbcda07efd2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AT2DY2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a42f07f53fec481ae8b23bdb6f8a8a81ac86d8ee4f9be98cb7fc13a1c648ec. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AT2DY2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfd021d1a7906ab28d5be93f67007610625e09e52c69d0d62b2c52b3fd46669. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AT2DY2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe864de2100d1bb8680f6c95df2191538e080297411e0e137c65251e8cec98b6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AT2DY2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb862c5cf91593ac50ab318349e3f4040cce6ea50b7009ef6749f145f7552f45d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:23Z), 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/AT2DY2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162670449ebcfe560c7bfcdb0c9436fe363c485e7f26f278670fe2a906abe945. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AT2DY2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2237b423b3a3349990566059127de54e80a1a0307dd6d96b78dcb2aa16d57740. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:46:49Z), 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/AT2DY2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445b471d6d10d1adad0365bac1370d85298f603128830a20fdb7fc8f9f9ecd1f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:13Z), 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/AT2DY2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea33626fc7398bf514944a18db72a54b380e7b001fe8a8ee37d9985e9ea23491. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AT2DY2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc75cd9d78d28eae217567d409f1cefc033ade43c72b8d2acb4a2f198c58c732. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AT2DY2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b3d25d2f02c371872c747721f7a5f6e9101481140738157a1dfb8860360b0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202565580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15c99a8c17cb42afb9b8f312647a10a483ca9fd08b1b1540a7a9460c590476f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX202565583.