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 0xfecc5dd6f81890bd497a3d892721c9087d89d3eaca6acc50bd947730297c516a. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/940b7488-f3b6-4ce7-b5cd-d50d051789c2.json and https://artists.proofprofile.net/proofs/artist/940b7488-f3b6-4ce7-b5cd-d50d051789c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ain't No Stopping Us Now - 12" Vocal Version
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 0x9f4487c422fd4cfe347b0e2f282dbdab0026d6969b584f63c013340a0b7830fc. 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/DEG932200786.
Ain't No Stopping Us Now - 12" Dub Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b22adac6528e1dbd31b0a16463cec0c3a0d3cf322d37711641eb80e3c431a0. 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/DEG932200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545404dc16fa48bb1d45189e74c58b9147cc933d21bc150f7b76dc3ecf63de1a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEG932200788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df4e623f0c1a22d9620cf75626fe55c501bdb13cd678c44544506919e69751. 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/DEG932200789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa678bac8b444e1960f564279198406491187aa5893504608649e0f3670ce6a8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEG932200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e843e9bdba983c6a2a4ea43dc8054a86da289bb340b9d8574072b6f4b429ae. 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/DEG932200791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610611517ada0db26a17807ee7bfcb9583529e149604d35e186f1e135e6c768. 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/DEG932200792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1bb1b8c9feabffdff991f6e91150fc0021120bb58e7814f6ac60b7eae0758. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEG932200793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74404a7d003cd393cc186da6507204cded118bba9d6aed5c1a38593002561d1b. 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/DEG932200794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783526cea9c1757e9def8e3ec70c81a375fc2375c7a38e44cb32f7576a1e750f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEG932200795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2b1e878e48cb1c5f241d95072cb8f9e5fbbe0b7323ee663599ce30bde0dbfd. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEG932200796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8430f039445c6592cabac5e2acc27052264c80f2039e5561be21b6ac38ece7. 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/DEG932200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da6f44ba9175f6bed8902eb2372ed76c410ece45f461a6871967b218669b498. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG932200798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49767f4d116ce51c016f48ade75da374677dc2dbb1be86b6b1e9f83158f23a7. 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/DEG932200799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf656a9e0392a7f68e1f869720f065bf233f93d9451c39e792f67a56285aa67. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/AUBEC1717270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae80fa9e1012a8a6a7fe36a191fde8d746a176c2026cdf924082ae5de1946d0. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USLZJ1673360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0028f33a2802f7b87f455b1ad03577ccd6a77bcf83aac5bc6670a3ec173cba. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/AUBEC1717234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8801f732d03188f0fdd61d66a97f385f7bdb742e18e0dc641bd589b742f614ca. 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/FR59R1708135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b3654989783e7470633fa28e0f9adf50b0b4f3faf23967536c43286da5b817. 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/USA2P2237445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5412b0d7ae1537e335e960188df62e81c0bccfb0f6977bb17bdae00a82d8d5. 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/US3DF1830366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27bfd084ed920d93007d9f1496241401545cff5d996380f911a3d6527372a6d. 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/FR59R1707938.