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 0x6452c44c77c0817cfb10012af5d044504dd7d35167c0509115ec7a03b0d18704. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19173544-57e7-45a3-9382-e501f9cdcdec.json and https://artists.proofprofile.net/proofs/artist/19173544-57e7-45a3-9382-e501f9cdcdec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nuit de la glisse: Don't Crack under Pressure Season Three (Original Motion Picture Soundtrack)
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 0x8d034881231ed4b36af2f2aff3637041af2e047a964fcbea817d52f67c7a906c. 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/FR26F1700347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960a2e31c75fe6aec7be066789e2f9cc030b9ddeb14812ad09afca3277bf636. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/FR9W11712827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04e8553b67e3649edd15ece042625e9523281e32dbe7552b2f945e7d5de81f. 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/GBAZB1714008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6455fae9d245dee50a6b4274d64c41053b46f82cf4aea98f37264ced72a693. 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/FR9W11713042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e747b0c85fcf47146b684c8e0a89be7ab9aab3bdd5585f46c48cd51c09b12f6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM6MZ1475038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6922613192915429fd7ffea908b6094d1c6e942dc72864f46c795fa27e061a. 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/QM6MZ1475044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d753b3f815e475314949dd84fb1c73f5d0779c19ab4bb96a1095144385fdbc2. 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/US6LQ0900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ac9b02e5c698ce8e02a4a372ba66469b77e1efb4674b6708e9365f24b2c5e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/US6LQ0900657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9686b5d1e17ecf3988974d7cc2d544716bbd4a6422c398a5416746232df0c653. 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/USAR18600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a69c3123d7b88f93413404232eb663b60c2178b49ae3dd0d5a87b8804a02e1. 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/GBF076520020.
Drop It Like It's Hot (feat. Pharrell Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14169bdfca0ae6d9a14ab1ae3362f5a45139f6964f23968ab2e0415c34806cb3. 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/USMC10400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48abe675d40844540d67019eb6adbf4ead86d78abcc08b809ec895fbc393a3b3. 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/US6LQ0900658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59032833cd2d51a62b404cc9205ba5c5acb469f72041b9fb20932004175e29d. 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/US6LQ0900659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798b89a60ca7ab176d230031c6d1c2049255639ed28b19e66fc15647367c8ad0. 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/USJAY0900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179f6f7e95680909326834289646ab52536b1740ebeabbc399b7f117214db6e. 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/USTB12100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08827e81ee8cbe9408a48cd35a53a89202334249f2f4da9222a77f27f2c32443. 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/USMO17000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03d6ea3d90805d04bdc492dc2daf22b9984f9e17fad37538ede8e9508210aa9. 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/US6LQ0900660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393dfca04ed13e3c01b53914725e40a4dfad20ce116f2754ed4d95c27a875e5f. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/US6LQ0900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ede6f960c1dec0229148cfd557c6f195e1d5c18afb50d373e0d60b427312c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/US6LQ0900662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aff359cdc822f82580e8f1a69c0c17a757fab06d772c02ca866807d0f229a1. 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/US6LQ0900663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a7f23fbeff70717d791f836c7487218c5f206c18e1b7d047b31aa262ed320. 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/US6LQ0900664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a2fb7018de799b343dab9961594fc136e5733465f7aaa297ee4b8907fd4cca. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USVR11300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eefdbc2cc9c6b199e54afb7f682d007730237e3853e49cd84d042073fa415df. 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/US6LQ0900665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b435f9d7f963cdf7686682b10c6115e68c5aa47c7debd7eb00975d34f6a18a5. 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/QMREU1409801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84243f37e5363ad98b5a6c803f885128aa5a19d555f0e477120a53623278d175. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QMREU1409814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2c2d71c6cdb51838db4b79f6343a69ae81bbcb29f4e5b77a14ee0397634a8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA2P2022204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c14a1284c2dcd649ea402fce54c328024c432b5829f98427b987fa0241c57. 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/USA2P2022196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7bf4d9d4e1bd45b59fe7f09e7787717adf8c7c6e7dba17e50b3d8d4508245. 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/QM6MZ1475060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c6b2a3dae2c02a79cfc564046040cb840265783fc4f0715df2fa75430e31db. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM6MZ1475064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39e275422b637db135539d8bcba15944cb7fc73c5b512b8e8ed4a8a18a29ebf. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/US1ST1519086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e818a45fd0541772983ade048b9ebf3fde79e6700595ee4d40c5dc559905b. 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/QMREU1784690.