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 0x8556b031a06e7df95f223f5d2d62ba51ad7cded41c678d1c23325a396795860f. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e56a8d02-2e95-4f8a-a5b3-33e97d321e64.json and https://artists.proofprofile.net/proofs/artist/e56a8d02-2e95-4f8a-a5b3-33e97d321e64.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 0xd08b9d8314476e32b9bd7886a3b141be7846387cbeb8a1685ce3ac2e553b7494. 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/FRR642001413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56caec828c84de7fc946c30c54bb2928f345b4ffa776e1a71ac83900e0bc2a96. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCADR1825541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aed5a90ad5503027ded2aaa7ccd3601b36c0ebabba900fd2f8da06839ae91b3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR9W11906605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9379650a8794d73ffa3cabb60d693a82c59c24074287b4d89e2d32a936d097. 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/FR9W11906608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd424d48cd9b6cf3706b66c5c1c072bc35df42055f983ed989a7a846446d2c236. 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/FR9W11906609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd5815a43e7e22e173428aa3d93e5e0f7522f7a176407388c96ef86a7572575. 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/FR9W11906610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7109f844e2ee352c05389dd3c4370cb09470b3eec077f2d7460231a6263d3a. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/FR9W11906612.
Make It (feat. Nemir & Di-Meh & Gracy Hopkins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe310147fe3ba3d162ed7ff00692b7dfbae5974f136995034d34fccea220c917a. 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/FR9W11906613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55aa1c5e9286f70901133686328328e8206b982874404d0f7e86435574279f4. 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/FR9W11906614.
Le crime paie, Pt. 2 (feat. Prince Waly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95500847c2ba1bb4e3d42bf27218fcccca7ceffc2f699bb120283bf735fc961. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR9W11906615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f92ae2e70b8176cf8b236604b3067d52b8c6b50ccb3c15a22298877afbe8c. 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/FR9W11906616.
La belle époque (feat. Deen Burbigo & Gros Mo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c23b3b2ee9a020b3c1d9fb8b1d23e23422d10d986b64488b831783bb4b0abe. 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/FR9W11906620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c19d49ac6c772e53c6bcd499fdb1c9310d0bbef5dc702e869330fcd387970. 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/FRR642100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2cddb03daea64c8c3bc393b694eb1d1fbe2a7b6616d039b3153065eaf5ebe. 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/FR9NG1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaae6c77fe9f3ed58e948789240c370529b02cf4a34328360c5d5cfb9766544. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR9NG1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc9c37c80af990dbf34caa55628b31a6ba871759675eecb6cda39c71ed751c5. 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/FRR641800265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78004f3622411ffc50c692a9fda35d78314033c4c46c6a1581633885616c49b0. 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/FRR641800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c00a0528e5ec7806546ef826517714f88bbfb316aba68d20b8dc50381fd2d6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FRR641800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17196dff847883dee89b472e9e023265f8438e1d6c0f7e9b7152927c46c5b7. 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/FRR641800269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4a1c37c82e1f5cfef234754734b31a4b3ee8f8365525684fc398c250401aa. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FRR641800270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d54c1a5ab2353a4f0048e3a4ac16deac6666c9f9001a63afab60fee7621450. 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/FRR641800271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d26072dc4e3ae8c91f21008d71af2c03555c86dafa8858ee949fb672fa5565. 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/FR9NG2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4f846e825869323b52b25a45ce32a16f036c75d6ab26ccd3af7ee81a0d2c0b. 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/FRR642301394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117f53b65ce251238eacfe7f89796e597fcc7715359083f0fbba4cf6b0e1db44. 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/FR9NG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e4ada9fc4120984b0f04c7a2cf4144db01b7d91748422bb638a2694ee5f365. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRR642201017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e06c78000a42b045533295ce313a866a322823e1a21cfc64cdcb7abfc48500. 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/FRR642200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c0cf7f4fcefc974455fdff7f58c1c335e57296dac91f39726dc1606e9f5bfb. 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/FRR642100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85727081fa7f3de51c8ef9472c1e3a5aed0b48a4d64adb0fd673a02c32d202d. 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/FR9NG1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f424b42df76d6de679c93eea41af6eeb2501fc2d88e4bb95f06291f1ff08eec. 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/FRR642200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e3545f0e9964c1d0b1a32faff765eba7366858e2d7d120d2044a73c67d2db7. 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/FR9NG2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be80f3de5b730aea3b17fb8b48324bfdddda36d87693bca6f93d86cba06a230. 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/FR9NG2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3b90f263149414e6fec454b98f5646a7bb4d2d48c6aa074e7a1ef6b3414a71. 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/FR9NG2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fcbdfa965e0c5c1968b16c6f9db8218f347d01cf59122bb38b4a2b6947c51d. 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/FRR642101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b503dd3362daac5efda8a8a2aa2311028a7797eb485998b1ffd783773e3376. 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/FR9NG2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39160b2b5b650ca869cd21ebdaa4ed63c29bc7a58a203bc30772cce3cbf5d82. 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/FRR642101180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a85a82d12262e59d84893361ff5e1c9b9072920dec38e76f0fa5fd2737e78. 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/FR9NG2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d80f52b1e29f192963194d3235a064805c8e37ef82e88d22867f7f68566193. 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/FRR642101361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc0c8ff1ca1c1a0461412576a69e108463d2f377a638d6bffc99a8d080c46e. 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/FR9NG2100040.