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 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 0xf776fac3184528e5bee3fe91196c0895fdd500c336cd52da910ddb7c2a24686b. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d84acf34-8147-4dd3-a2ca-47b4f747fe3a.json and https://artists.proofprofile.net/proofs/artist/d84acf34-8147-4dd3-a2ca-47b4f747fe3a.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 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 0x9c1ab7712f6595d00e7f20574c9ba9468315c4cb0087045603c2861b77ae5ce1. 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/NOFLL9910040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edccf9d34ce20148745a7f073625b8eca2c3585ab8ac25c5275b554e566d5cb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NOJRA5808010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b18a27372928a47f6619ebea9773cb98de77f38d3cbc7e40562f00f7004e74. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NOJRA9703030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761cf586efbc46a3327c749cef21940457f428e489a701f6fd5dac0e2a06550. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NOJRA9703050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc373c6075bde4d108142c4b6ceba9a87b5127403be5d4915af72c8e1d4928ae7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NOJRA9703060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385381d4f3663b36f7d7417c429893b7e276357a351134156149aa0076993916. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NO25V9301110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b08cc5038e4efdbe95f664fe150c170f05cdd8b2ecb11e8602146cc5edd50b1. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NO25V9101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e0172e02744e9c7ea1edbe269bcdd272b537b9851f99ff3bf6098e64e375e1. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/NO25V9101030.
Har Du Intet Rom for Jesus/Hvilken Venn Vi Har I Jesus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139c8ddee769415767197f98a5afd0de7979f0018f1f7b62635a596d39a7e37e. 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/NO25V9101040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b11d9e87fbbd08eec6a5c2022537a482b95eab3db9db3c5b59935fce92c6ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NO25V9101050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38183e051b49083ea49671c93cbf0683adb2dea4444525942e58549f047df75. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NO25V9101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe2010684cef3fb9832d830ad721ef43a911a50c3d0905291c43520a1b1534. 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/NO25V9101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dddb2217b5267af38b321bfe9aed7482b5386ad6a83797458a55489e1e39c16. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NO25V9101100.