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 0x96042a9120631911f71b1abff4f72f9b7ce793b2676e3faae302bd31ebebfc06. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cd75aa7-e641-4916-b451-7f092b7dd647.json and https://artists.proofprofile.net/proofs/artist/5cd75aa7-e641-4916-b451-7f092b7dd647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dark Liquor (feat. Mikee Mula & Shotty Horroh)
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 0x8ef006ce8c128f5d3234adaef7440a0a536de6981ab8412becd369e40475db8a. 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/QZ4JJ1666680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c016aa53ce66698aa6635d4dede01072c679a617101320cedf686816a6a9f64. 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/QZ4JJ1666681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789aa58962257ddcfab3f0058b0391e84a17108afdae3e8108fd439a83187408. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZ4JJ1666682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fef2721a4c4387293ec9b5a57d46ac089209e5a1805e05360caeb85ed3a1aa. 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/QZ4JJ1666684.
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 0x8cc9f017208418064fe410d53addf3857962af649e61ae627542480d881dada5. 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/QM4DW1879159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9be8aa152066bd4024fd89d981c8cf0252a9714b08ca1744052052eaf5a33d. 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/QZES61827398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5c71bd4dfc65d1cc4c919c99febf82dab21cccce917b4e7050102cc943b29. 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/QZDA71956323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef20d84d36809f7e3dbafa089c69b71ff71e3d93663d8f0bfa9bdf39dc4f78a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES91938411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0ab7a97dcf63de1075d47acbf10fd01f8c12870400b38fdda98076e634b6f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN31948715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80956fb2c7273dc05839cbd5c407cfccf7cb94b966e9cc0bb1fcd68b52fa386. 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/QM2592005255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b6c53f1e3bdf845c7d53b308fa87d18c9268bed115ac036276d4878d147aab. 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/QM2592005265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bff3d02358b4ff64a1b5001d9a71c5b4d39322eb7b3341974e4e8ad881178f. 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/QM2592005270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60920599af7944dfaa2c973667a234f7f23f9ad41d91eafedf723a13044fd991. 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/QM2592005275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648022b5df873341629badc543926e3fe49deeffede9e56c98fb01b160c0a3b6. 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/QM2592005280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d362340cc2a4c9510eeb2bbe00d7e84ccd6c77041931ed3b3f2416e008c7f3c. 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/QM2592005285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1ba39b90809e08ac119d0cdd30d6458ed4255d3eecd4c9b9146cbc9a35a08f. 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/QM2592005295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66180b4b27c85fcbb3912be74344fb88a71f63a978a9bf48325e1caf954f1a2. 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/QM2592005260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6234a7556335b1f31c743e89a4aa41db4485168d72eac202820c1f503cd69b89. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/QM2592002500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7538cd1d194cadbb172b887325c9791122a7c32a7d9ac23b203072a527e3af. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QM2592005290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b7c0cdf39f9eada8a8ebf1d37095b2936cb5d68454c42f86318b49489b1b51. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAFO2119337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dcb5d7ef9ab35aedfbeda27d0388e183b19d2ce0b5817c2b89da46d8af8d03. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZK6F2262121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e8a929e1a5d3508ac854b8f3d2c5598b08501fffeaed0cb2ffaf2230759b1. 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/QZK6F2262122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff4826f0779b7f2f48c7ae937e1b7b86d253139e87eb0fdf4d73f2c3c46e575. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZK6F2262125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe62ebd311a6c3740d984fef2f1ab33f9bfcc525a0bdc55b6b470f8c237bdde. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:17:06Z), 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/QZTLA2362847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb12adf669fd3207d87026f34d2f7c21f981ffd4b887c521255d4553aff86f1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZQAY2321761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9d30e4a4c5d21fccafa0d3a696cdd4972667a13b375488e61ea34bbb07d08c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:05:57Z), 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/QZQAY2361332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afc5542c05fdfeabc8f5b6b0bec067a47dce9f46ed194a68b52fe28ef09bf2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZQAY2334215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bb4bc4f22fd330f33559e155be00363a65dfdd9ae7775c9c73be4ea0346880. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZQAY2322502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b4cf25b3ef8c889ec17a16ed549f931782f798829d8e8980b138bf52e355f8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZSYP2498270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b1b0d1ecdc1c5c5eb5776436730692af4d960d00239218a2b646ad4defacd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBC2449108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345c07ed799e3f33220e21b7bb5b88d57fb419bd4d3572573b112bd36da74000. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:36Z), 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/QZTBC2426369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc904144c5f3fae3c4a05280ec28523b83c7c6cc2ad9ac448506dbe159353a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN62519107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6138701ab12204cceaac6bfce89f1c0ab7b63ecb3b5dde07153789ba95cc5f. 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/TCACW1624263.