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 0x14f33eef3e2ed371861a0a104ac399e14a8852650d4d38ae396c15eaa284d6a1. 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/688a0a53-3607-4635-b0df-c5c10bbabf81.json and https://artists.proofprofile.net/proofs/artist/688a0a53-3607-4635-b0df-c5c10bbabf81.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 0xd29a3bd073d814bc7591234d835899eb73fe35a718eff0ef04d7a9640b02c7ac. 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/NLS241601668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071b62b4aee9794751542d5ddf01eca62b17dcfaec208c95afa9391431797506. 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/NLS241601669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec11d5a6824c1cdb3a9591f6b9caaddfc0f1f6d8905c5627854f9cd487f671. 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/NLS241601670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3899a6de6d600012c407dde3790ae44ea8abee482809055d6b07dfcfeecb1cb1. 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/NLS241601671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bc7cd5041c1e007d596b7cb1237426bb1586d33296bf16605eb34522b38b6b. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBKQU1775733.
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 0xcc3b3e2a915b8e6d5bfc964258c00eace49fc0961f55b8204546a3fd5d840775. 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/GBKQU1775734.
Drunken Sailor (Early In The Morning) (Sea Shanty Mix)
Drunken Sailor (Early In The Morning) - Sea Shanty Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57272ba829ac38a70e9bb3e03b332b71bcf1595f0762821e24521d7f9694ce14. 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/GBKQU2161006.
Drunken Sailor (Early In The Morning) - Sea Shanty Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99afeb5313f74f6eb531f0cf1457535813f0f964cbdecdc10885453953593ac. 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/GBKQU2161007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102a0cf42c8e72d593fbb1a56370aed900d3e34783aec05a973771c98bc0d42. 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/GBKQU1987361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8150fb491316345e62158d8b6def38d55dfd767a1335b1a7026969589c9521b6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU1987363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ac306a616eb01d4e1d2181ec0c5828ffd840b921253accb340a476e227f6e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBKQU1987362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09ecac3b09cccf9931e8d9d19daf49c851754202a1c988a85d078520b6a8ed. 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/GBKQU1987364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b4fe08fd43a3ec84e8eae251282e1432094564a7a1b9e109a7461b1eb33503. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBKQU1987365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceabe54c2a5202525b8885b54baf75ea5b3d9c91ab5bd39ec5172d7fae0d0e5. 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/GBKQU1842940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c2f8adc68e6f383022cb55af20274b178ddb54f3bd45945f5456ad7119f27f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1842942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ae7546df2a53434928d2bbe3208c59c4648fa3b54591f117ba0585535a713c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBKQU1842943.
Calabria - Klubbheads 2018 Tropical Vibes Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e5cdc3d97535da51dc215ab79c18e517a3b6df2c03f3fc857ebba273a0158. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU1842941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689039a7c3508bc9eb4310648e7cab85b3a975297d556283c3a0b375ac5caaf. 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/NLS241601675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cea7a089aeda6eb0d496eff8589573b6357b273ad3c89eb72b86b27cb32780. 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/NLS241601676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc332c289389cdb3d49ed6123d5c3b8de3be34202c3d70cd6b77b440af9c7935. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NLS241601677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c8c6ea5885545486f435e18592759c51e163a534d4e4a93c725bdcd02061ff. 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/NLS241601672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa9537b03e58e44aaefad7f5d006f3cab60cdfb9991f490400af7f4085d95b. 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/NLS241601673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e1d263cca343857feb9a87c2ab47c558acd28866843821461910a533fea1f. 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/GBKQU1776356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0575ff127e4ea987b1f3e5b26d5f432c862f77371645ed740d7fe49a41e420a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU1776359.
Geht's Noch? - Ruthless & Vorwerk Square Beats Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe993c1055ccb24b663ebcc834e8247fcc8114bfb9bf9b5c5473dc3a63b76308. 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/GBKQU1776357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532013a7d5fcc0661f214cc877b303227ba10949b0364ddacae45d3d9d00dcfa. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU1776358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f251893e71b11ee8d5696146c80c21faa7a6c3c1cf5aef3f5c86c74fd915e8. 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/NLS241601666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08fedc98408a49e0c6536c4702f4e05e983313c5965ad86389e79bfe8479298. 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/NLS241601667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7d52258abe97b18a7ea231c6042462fd514e45b894880c5322eb8bef049364. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBKQU1775469.