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 0x66b5175d0256f97715a53ce4bbf36e8c8a67982f6759d4a8b31f57b01cf7c4dc. 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/68769079-3a4f-4d3c-ae23-8637cbc138e2.json and https://artists.proofprofile.net/proofs/artist/68769079-3a4f-4d3c-ae23-8637cbc138e2.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 0x00358ff1d4abca30abad8e2c00dd08bfe85e272fb9afd2b18b151bfc63b68f34. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/FR2X41608713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b4444e361fb03f74acc809fb9afdfdd6d9e0171fde8d1c8514424fc145dba. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/FR2X41608715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7846ff971669bb57a031a7b90cfcedc7c5c15b85d15e1797cb55e6ab35bf50a8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41608716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d597513fdab3336d8c3f7d54fd55c684b1f49a6d627872ab8f1c8d3279b0d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41608717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd20f23093ab2d6912915826442eda8600c781ec357b1ea1264bebcbf1a0cb08. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR2X41608719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713390feb0389d373d1db5c09b2d9f45410c27e16299480e4473014bec2bb58. 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/FR2X41608721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b1701136b4983f3ef187050eef1ed33bd301faf8886bec465c1f3fe692c3a8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:51Z), 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/FR2X41608722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad930135a5d1a99d5c58a0c9676fd6d4bb9a5b92214e46d40470bdfd6f953e5e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X41608686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c1fe88fe7e5e794e9511cd8d13812ca26716309132afdedfaa81180a209c7. 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/FR2X41608687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f814a46c6927e2a7510d1aabb86a71bb216a4121f2805965e289fd5c7c869c4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR2X41608689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9905a15214d1c6dd699e9bf92cc547f467c48c2f3a3bfae92c5c4a23be4632b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41608690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d9e3438b1daf7a7f46434659f7880c3bf250c0afbc8724469c8934eef2f1e1. 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/FR2X41608692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c92a66c56fba77068bb309c8028cfa99bc17846f428b9492a8e610c1498098. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41608693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc317caa47202cc9dd5af8fb5779aaac92429e9e64debc8e889d12c4791dbf5f4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X41608695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c93568d90a6d0313401aaa6e0d03bdd1417c3757b5c4d55476a8d105380487. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R1865867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca6149b89337ed06738653bfd355bcf7d55f306acdaaeaf73b8940a5bfd277e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S1723217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe331256ef37ec9df3b919f4ca7019699fe1f583963ce53ffa4dda9546e4b8e95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1723218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd54fea899494160b824baf7c16f7c49c5e87cff1e6ba515a2b0f13da7f8c7c6. 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/FR10S1723219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4284565750f1f7b0d16c8ec91b680265f5267832094568b21bfeda95b226f8f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR10S1723224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47265ea144970ac65199d6be6cbdfbe7f66ded9328c7bfa30ce1206712d52cb3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1723225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e9e2c19ac3f829f5b1f7cef72e08b28ff1eae912c25749bb0fa6cfbe43dcfc. 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/FR59R2351539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d950abaa4ab6d7f6d437ccbcc9b910617412e3be917d94ea3061e02a8189e0f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZYFZ2336946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bf049eaa3f3ea7ff65e66f6e0c28f2a5679d53f70166a3459891a84a3b5154. 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/QZYFZ2336949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c302972989548675af5214d3691cecd66b65165091df9705df0aa1451e145. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ662438925.