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 0x7cafea158e0514d3a8d73fcfa444eb5c82bc84f238759e7e76ba4ad1383ba00b. 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/25a01f1a-f94b-403c-a249-7ac88fa1fb05.json and https://artists.proofprofile.net/proofs/artist/25a01f1a-f94b-403c-a249-7ac88fa1fb05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sofa Rockers - Richard Dorfmeister Remix
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 0x5eec024fcb958e5f797235a80c295911e3511cd152040eb7413fbc12783f811e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ATK439700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a295a1db33f74963dedfd546d407a3e20de18523fbab67c3a9c3758867516a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ATK430103102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb24b2b98e022420c75eac16c5974bd3305b5848e2bdebb1e2bae8affbf7d9e. 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/ATK430103104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05e93a9202fb6efd6e80fec2dd5301b0404ab8fb6b49d07089a54a02c7ee07. 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/ATK430103108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b51b68303fa85c0512766ac031431e9a511c0c005ff01bb28e91b9154e2b97. 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/ATK430103109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ab4a862376e2820eed81f8b95847d13823951f78d05879ff715bd5d9c437ee. 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/ATK430103111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec5d8a81c26dda128801c097f369d5e2efc6085c3d5c35c7e72b7b6e318cf3. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ATK430507601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a2ea2b61c28bdf4262979d92fad6358b1066de461af83b2976da8067f78302. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ATK430507603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec5d8a81c26dda128801c097f369d5e2efc6085c3d5c35c7e72b7b6e318cf3. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/ATK430507601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec024fcb958e5f797235a80c295911e3511cd152040eb7413fbc12783f811e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATK439700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3ab905bb406e65a4ef39330ab9efbbafb7958d8812ba3423377da7f52e42a6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ATK439700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf66501f7c5b1fee391e9287727deb74060c987aa1d6ead7c34aa7c65954458. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATK439700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e4377761171475ed08e0ac79cd4f42c70e4a902a6a1e207b9be091c7a2e27. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ATK439700409.
If It Were Not for You - Ian Simmonds Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1fbe8e256ab83d9f4ea9dffc90f8223c009efa43492f6d36a9345f30631057. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATK430002201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f4850b500edd7d9cc2401070426603a5056403c6d3a22b8467545d8b221cd. 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/ATK430002202.
Tsetse Fly - Hi Tek Steppas Meet the Demon Flowers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe2c7de2619f6b2358d20441501e62003b964824c15cb56f5d79d63d88830c2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ATK430002204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea66acfe89480bcfd190fd4b79393461df8e2b154dcf0d3fe8fd2b9632ff0bd0. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ATK430002205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa847afe8e89e10ec1a1e3180a1fce59755504b84bb9af2123f932fbdd6b55f3d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ATK439901803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a6008b6aecabecab589de91bd6345e08e787fca2121b6996144177153c379. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ATSJ91000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9069b4cfc10a01cfe618a3494f41b784303520ee1174460d8d48c175175f9b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ATSJ91000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7baa1ac45ba54cd3da7946b6952b5d271fb11ed4a61960f7218a82be6e06a1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATSJ91000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c60261dc9c6c75066e66bbab0f036a92ca22f718b2ec54139a97164aa1f14b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:27Z), 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/ATSJ91000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e12df8a1cc9f1ae0c2f80781d2db3df70711bb4a58f68d88c1584c9535cc6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATSJ91200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff2685d519d8ffbbf7ac8c5150c667c0369b12ebf217c9d6480a27ca4c3d4b8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATSJ91200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda63d8f5f9d0db2d723b7d6ee2f965c9a6813a107a5169f8a7b9e905d464797f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ATSJ91200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d6de5fca2165f5e57b483fe76770e326222523a784add778e372f09b66c86. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ATSJ91200008.
Das ewige Leben (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4bff63aae5cffbd7a0aa22a57edd0ab56ea5dd24615cc2d5864a4370f16013. 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/ATSJ91500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a8f9f05751996d6307a0ac4b3171470b9df6fba0d155e0c8d32f04413313d6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ATSJ91500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd3bed8fb58f9d8948043a8a93575fea30410b149d7f7e1dc083e2bb51cb31e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATSJ91500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3012f7f0cdfa5b51f3aabbfd73adf100b825581260d0c68e1568c8aba3bf74b. 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/ATSJ91500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e99ce437325a66968e8d926e27d158eff31632ad8b3bc362aa66f47447b33. 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/ATSJ91500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aea919887afad7439d9a8d2978259713a0e48229895c7de5afbb4be83e0694. 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/ATSJ91700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cf5d58810a13cd7fb6132dbf86fb791acf93bb3c0a6c667a26a075b539538. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATSJ91700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed8d2cb1dd6f30c5b9bc69384bf4608955924afc3469665b3a8d8982bc060ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ATSJ91700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d42e3db7ab404072e87ff46a237089529a84961867a557ded2543c52b3b1e1. 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/ATSJ91700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c9d43fdc225b0174b82925af44cd7412b4a7454a00a806d3dea33b351ade27. 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/ATSJ91700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a41103ba9893aeb81c495fe7c7814144b7419fd3a13e667ca8f4694b7acdf8. 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/ATSJ91700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54b6ed4a73beb84f4762ba1e6fb88f84f968c2cfe1cb4dd2722be009606690b. 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/ATSJ91700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae662d86d7de81b9e6b2e09295644fb725cf8d74896d7abbb608ccd6f790d2a8. 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/ATSJ91700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb5d38b92b23af6611240c84a8c1674c3a0c818d1e99153415592123fec790a. 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/ATSJ91700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba10df8b6ed3bd8d9fe3df3fa53979279d9237ccd3f89e1faa61c960c8b14fb. 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/ATSJ91700011.