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 0x49df2904df87a941c524770f348b03ead783b70ec37c4393c47b678f66f488aa. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6baf647d-2838-4444-a308-a810b793d473.json and https://artists.proofprofile.net/proofs/artist/6baf647d-2838-4444-a308-a810b793d473.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 0xed27edd2da675185e9452ced5fe7bdbe28c8af5d18106d367e40e9fda828bdba. 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/DEAR41957355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094a0f25c7dfd8099fd9290cb5fdd9af95c3aeb3eef13a087827ad5fa2cb12e4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR41540647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549abca226f52468382d61b9149a9148043adb6a5fc196a5d370410debdc1d15. 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/DEAR41540650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cb9cddde1c8a1aec0c6d37882e0546eb5800d3ebeebf28355ecdd859efe3ea. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEAR41540653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38729450e09a53c758c9ea5e11dd432f0e2e31e649232715f4cbcf6adebd342. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEAR41540660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2714a07fe2097afd74048774be93cd621bbf3c0cad100117713dd16be1d73a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEAR41540677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ccc59745ae08ac10fc81959c993481d4e8904ccf0aaac75fd498a817761765. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEAR41540690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48793a19c7b3cd84d2706a509a6e7420eb89f417534e57ba765027bcef29dd4a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEAR41540692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e92d7e14754c11f0d6e8bf5dd59dc92c311ccb38221e9bbe6387c900d9091f8. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/DEAR41351413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964691868bf28c9cbdec9495b67d46f8ccbc61ef44fb1cc9397b5228ba493748. 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/DEAR41351416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7930d7ae335f7c1717a7308caefc20c126eec6ce0101f7e2078ead642171f1b1. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEAR41351419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ea94954cb71afc0ff3602bb29d82cbe8b1562236718385ac157d161052cec. 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/DEAR41351453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b529d710fcaded293c6a365700f946074b08422b7dff246480e69a7ad5ae29f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAR41351465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe340a9fcf588489016226b5a8d63b704acce2821d276b771008190106572014a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEAR41351479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cf0b1d9f9c7174248a5453b3f1e294521838267d893524bd93a4b0213b58c4. 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/DEAR41186021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e04c76e6a3298c57b0cc79a8fa25ff1b3c0dd112f84adeb12e285af901cbf. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEAR41186029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db6cba2d227b7df8e3f8da130126cec32012d2cdd926aaa670ea07dbfa1da9e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEAR41186040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b74670325aa0eb3476d6040b7eb38eb25c7bafc8972c884232ae29562bc6b9. 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/DEAR41186115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac3a235f09ff8d5fd1c4f0da9b4933d19bbf95dacd62221131f92893e39c21c. 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/DEAR41035725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4788130869fbc150df4ed6b8236fb9e3570564ede4eb8b59ff46132fb814d63. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEAR41035745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7edc71e95d7024703f77789786fbd6da0693031055ecf2e7b0685b9daa58ece. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DEAR41035754.
Schneekönigin Die Eisfee (Duettversion mit Picco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f62e13cae2c980c07ed63b34229a53b3cd7297243be8e2bd1445c5c34a1d66a. 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/DEAR41035769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad61a5425ac026617fc841c71c5eba155491aa6b1611fa482ecd9f4b68be2cb. 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/USTC10781320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da1a7d9468d90d57f660b213f68a1880926f6e7f86ab5fd22ffdae10590a46a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USTC10781309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a813a4e7c83fbb3527ab27efd78816d41fc01b79fb96297a5a70467e652696. 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/USTC10781310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa3b108a402db43790b3d0b59475d809e1f175cc82dad9c43b45d14c0ed9024. 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/USTC10781312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bee171b0f11f06619e00866b0282c815dbdd2e6286a8f244b2830a5bd8a9615. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USTC10781314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e888b2a7d30ddc1d574a7cadf94fed1a06e3d532686edf52445ccbfab54dbe. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USTC20786568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb4a2cf6f006b6e915b4d580ab258c058aa2b9be28fda8c1ca1e62c8d98d0f3. 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/USTC20786580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3e9377a2dd75c001d86c97b1df1115a4efadcd63202df4cbb64d846bd90a1c. 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/DEAR41321879.
Groovebug - Electronic Music World, Vol. 1