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 0xce0514f5157d1881c5ec2cd1825818a1caf0ca40c3c5a8c970046bfbb99fec14. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dadcbc6d-9c84-4a4b-a613-cf561fd4b022.json and https://artists.proofprofile.net/proofs/artist/dadcbc6d-9c84-4a4b-a613-cf561fd4b022.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 0x1925a875bbd4a391e223fdc87609626c6a6e47ac56bcc21f8abba058b73add55. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZHN52179162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a660c29f6bdbd87283a6da8a23da19d7ecdef8a7b2abf47c371117f1cf1293. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAU2146521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41f031af413dcb58bc51837877c447d572b349fa19674863818fd9128e49ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAU2146523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a05c2a92d9cd52087140e7d97eef2f8f3d309947199e309d5dd4915744d80. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAU2146524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1480e27c5f2d7a82c6de6e65ea85faf68216c16d9b11faae5f862aa73e661d. 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/RO2DY2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec5d5be933541a7582ce896ef3462bb8b4db5842e26bcb2329197c41033466. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/RO2DY2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1480e27c5f2d7a82c6de6e65ea85faf68216c16d9b11faae5f862aa73e661d. 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/RO2DY2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02c8bfe90aaff0cd706bec2c9e8803482c055e4d2466c12194b0bae625d24c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RO2DY2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9453c4102f68ac496b3bbc17d1766d75abb9e0e7501f9428e44bf49214f638c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/RO2DY2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782da2e00a7e09126a45710e9dfbc743a6e86fcaa447c26e1f99d6a3ac41d10c. 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/RO2DY2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1542f3427fa36c4c5bccb376acd43779d8acc0c963030f7bc6f468f398e2f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/RO2DY2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6127bc97d7fe1c61fdc506effbac0cc36930af21a2e4f58260fe86c603fec7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ROUM72300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444cddd2fbb4bbd481996e0753d83402e99d4758ac5dfcb39c9a7dae3e7ad9ca. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ROUM72300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8b72072a05f3a4a0e166f639c56d30e2d1c522cd68d4aa365516cae7425fd5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX762400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe90a91abcb5534463f1ceee0e2281288c8283d155150f5594bc9020c2648dbc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DGA0T2428902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3da3456f478b26a4a98293fdd904ec0510be478aca572dba170f642c5dbf2d. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR10S2526237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3da3456f478b26a4a98293fdd904ec0510be478aca572dba170f642c5dbf2d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FR10S2526237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee06ed36b36667633e9920b7ef63cfb69b0018257a2799f9d6c2ce0e8e2bcd71. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:58:37Z), 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/FRX282548106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cde1b76dc3ffd069fd8504748182a01ffadfa78b82d8d9d99f79b2eab1b7f3. 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/FRX282548108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc7d33af6e7e53a2d96ba72e767023a806d3fc1b5fdbf5a0a9f02531eaa638f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR59R2555392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ac0f66ef2f7383da2a9b3ce701d062ee5f46650e1626bb698c9d2eb80add60. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FRX872579873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4e06d03f5dff986720380a2c2e36a5946de7fc063b60d7179f4deaa7d8e79f. 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/QZDA52138507.