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 0x825d6f48102107a5117a440cbe2c29421fafc5e7d5e3f27b2d979ab2cd71f010. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94ef0523-4a6e-45ed-a858-2ae89f6a3f2b.json and https://artists.proofprofile.net/proofs/artist/94ef0523-4a6e-45ed-a858-2ae89f6a3f2b.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 0x10f63140f2b5813eb5ecdbcbd83098d33924c1a9e72b8ca05e4947e2fd0e60be. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:20Z), 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/USHM21470748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3574c21eb52acaaae9ab4a2049557979c7b67f2d43980a73fbc67e5e48bf8807. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USHM21628034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba3181ce7ce1ab3cbbfe69f188787806512b4bb853736bf71564f4dc89b93ed. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM21628035.
All My Favorite Bands Use Long Song Titles So I Will Too
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8c3dab1caca7c49b2a1a0bdb5197810987e55c9ca5f449c5214f308cbf35d5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM21628037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639b5d36dadddf984b86133fbf3612192e7e820b214e774d85691c43b8ce4598. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:31:04Z), 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/USHM21628038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5964ae3ffd8a2a176a53298747f06d05a3fca6c077546975119910be623bb3c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:51:55Z), 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/USHM21809596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365ef6c75af52c0a8dd884001f92cc5b0a21aa179e180ec2638d3aacd202a237. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21809601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d8908a0b3ebc954adbee3a6ebccc8b3881ba6c6820fe18f810e0dc80ec8924. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM21809592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4844f4de669ab086354448658fba4d8465a853903a1e09495185416eb71960. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM81913748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dd0760bd9c8d9fc975b22a485b659c085f2efcc42e6e3de973628eda09d228. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81913749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abfc9d889d5b2b89ba1f34117bde29ff480603d29e78f9daacf7582cd09c800. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:40Z), 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/USHM81913752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c32fd3970caa70af75406d4f5581c569e146c746bbdc4656dbcafe0e221879. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USHM81913753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4663b27eca9a864a732c6709557e1eede4e4bf7ec6d4f1fc672730df67cce537. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCGH2073000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb447813404e30ef6d714b96d27b1273fea035427b6ae0b1c1a337145cc06c7f7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZMEP2085996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5856c39293a55cc49c40968066b7597a36057b7b68955be95ea786c8295380e8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:48Z), 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/USHM81913747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4844f4de669ab086354448658fba4d8465a853903a1e09495185416eb71960. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81913748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abfc9d889d5b2b89ba1f34117bde29ff480603d29e78f9daacf7582cd09c800. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:37:33Z), 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/USHM81913752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c32fd3970caa70af75406d4f5581c569e146c746bbdc4656dbcafe0e221879. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM81913753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b51bf5c4637c68d5ccbaf3271ab16287b2fcedb4d9d69c44648b5e9e43c68a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWV32595975.