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 0x00e3507c51e50284416b6540558fb36a81184c369d0c44fa3fe74b9f1c04fe46. 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/62567e9f-0534-44f8-814c-8f0cb4388a98.json and https://artists.proofprofile.net/proofs/artist/62567e9f-0534-44f8-814c-8f0cb4388a98.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 0xe21675037056425ba0b5af6ae879d1d8eab006fe41a7d7e8b430b71eaf39b53d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62109510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc60abb99a0c6c2dc3b22acfc9f0be85ef66f5b18fde641e355c68c4c44288d. 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/DEZC62256852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0d36c54958eab42e1266156bcbc99045eaee687ac3fb5ab7d38f8b9bec576. 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/DEZC62288397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f52d3f9f7ba2a2c3f287df1427d728c44d6d4c2367acdac6b9462181448490c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62354004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c774edb5b8cbb0e46fbb34b35e32728584cd3dafa4f0a1604cbb67d1323e74a. 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/DEZC62354005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d380a05f55042e561fa9f1dcde1151781a6ff507439b322d40ed4f229f13b8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62354006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76a0de58135ef8eb0d39a34b4eb4d97f57f741abbc32d3120d123c73b3f4b8b. 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/DEZC62354007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daf3d5bd8a305579d59713d6d831b2b8e88217ce6cbe917180985184f7c2d4f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62337340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c81dbc5221ec8be35c1c362e80eff5f16a8464c288841688ae181543bb5eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62340097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7f57866f14cf24a7a8352fde3f95582979ede801484b1dd61e72df70dcf090. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62354008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b4808eeb8124d0515beeaf110629e15838fa92de779836b59283f2646c3da. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEZC62411571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900d3df05db6626a9e345fa2f2ebb0d242f154c8c47a8dec7b09fe2d119a1482. 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/DEZC62411572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd22caedb99e86b3682d833a940db5634ecb9b67c7b2cd9529564ae07ad07b0c. 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/DEZC62411573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199576f35f0d9b655df0d1e794343c1340d22d1050149c44719e2afd052d739c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62411576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6795e7c8ba96f5103bb56a9b1d2c84e0350f8cdc1390c8bcec93ac18f5a4668. 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/DEZC62366862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a55944bad6dd184354465ec7f5b7ae6677106eff2314b9f6eb50ef55d15e1. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:19:42Z), 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/DEZC62373017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0766683c277c205354308f0625de5290445eabe8a0b9765bab93a8c193bf5294. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/DEZC62458286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ad5050d4690020fa6ac2b0087969792290fdb9ab4c02d5b7117e2687b3456b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEZC62458288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb50bad9df953107cac33a7a6843cc3955fc38fb74ce322c63421c06647f19c9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEZC62458289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb08fc524b26a21a922285ac7e606859e399be4df78aee4ea922f0896a39b3d8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEZC62458290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef116a02e0d1ff92ce5c13227cc4bc2a0aeba2115692c11d37c9d96c9eefb7. 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/DEZC62458291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b4808eeb8124d0515beeaf110629e15838fa92de779836b59283f2646c3da. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEZC62411571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900d3df05db6626a9e345fa2f2ebb0d242f154c8c47a8dec7b09fe2d119a1482. 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/DEZC62411572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e038e6017469828689e3f8c5af9d13356e9159e85e4573970b420abbb053a7. 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/DEZC62411575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199576f35f0d9b655df0d1e794343c1340d22d1050149c44719e2afd052d739c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:33:47Z), 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/DEZC62411576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f9b1d292176fcadda8439b7418f0e44178a441f7d606ebede91918fe8530aa. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEZC62411577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a00fce86efc7b463887992b2f12292b66975d94c729957a70eceea138968392. 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/DEZC62411579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a55944bad6dd184354465ec7f5b7ae6677106eff2314b9f6eb50ef55d15e1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZC62373017.
Little Miss Sunshine - Live @ Loft Spandau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf70a5f324812d95ded20935545c3d2a28da891cdda2449bd20ad86cd5ffac55. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:24:07Z), 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/DEZC62411580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161747bde70072e350ee9b5e16369351ca9ef8092c489502e968777926a024b6. 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/DEZC62284589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440808d4fcdcb10a193d03f5e6cf0ca692c31a33880b58a0f37865954f74fe47. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPLR2198728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71848e62d20177abfa837d492a8cc06a672d1c2b1ff7a89d1c7c86da1c915cf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022291279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bf96081aa0b969ed5799d6e02856881b58635894d3c5ee0d83bc45265b325f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/AUBEC2122339.
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