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 0x9085bcda2aca3db22f8c7f0283708c04555681d9a191291e1bc95deb8ba18a79. 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/b1794205-2ae4-4efd-a2fe-386113d67e8c.json and https://artists.proofprofile.net/proofs/artist/b1794205-2ae4-4efd-a2fe-386113d67e8c.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 0x74f5d13178d7f06d9cbd545f6075085f33c8ab76aa06113150bd17dcb486f694. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:16Z), 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/QZNWT2086361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dec889b034caa2ac9fcc445aafb8daaca1163d30436fda4f7ad978c1a6f997. 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/QZNWT2086349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d09884da1a4cdfe2e28a9b24afeb9a6c728f8ea0484e6d72e7b8f53ce1fcb62. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:00Z), 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/QZNWT2086355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43e22d645c61f06a18c49f8f9f85d512e7e9eead7d9233870efeb7c4380deb2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA62118912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14651cd57a36e59a6383b2be9d1df4e722b44e8d4e95c6b00fa40a6aa415b245. 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/QZES52139306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3254f721faa71469792dacaaaedd2c9be22d037d4dcc1cf25d5b6f3095839dd2. 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/QZES82144455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf059522fb48c54f52dbfc8a65e78277cca0a8374e8a005223a9410be0d1bf509. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN62190250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffc2adf8276bde06d78c8d978e85ea92b76ea3ff65c51abe5aa9ba50b0f2721. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:29Z), 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/TCAFN2125501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b4f9b50b557a1d4fd66ff29bf62bb0690ede0233e6f7a250edafc4fa3bd642. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHNC2145087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f5db1bc46728e67853d839fdde3faff57f1b5ba5f76e51860acd6b6a2f8ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6P2178167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1c782b9968635ecede91e7e3df672620884f543d640e5fd202544e7ec04709. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6K2105360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ce500b94d2aa3e71ca37d2ead2def429311756a0b6b3b0d5b260fbca3a9ac. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZK6G2163542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d439ed2e7b24a4c242093daf306df20db33d6c6980af6ab6a5bad2865c7dc7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:07:50Z), 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/QZPLS2100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16473c6138c2602128c8f628a5bd93ebd2ea7953c8ec892fc7501bfa0a0ad06. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:20:15Z), 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/QZTAS2180148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb77e401e3f90c8e5cd99d236b3cb62c056b42aaca0d8cfb45a61420a9348b5. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:05:32Z), 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/QZDA42297463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f28de94d6eacb051a3d79cbdd9a8e6ad5547233d128359da3b096a8ef88c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN32248925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ae4c8f069df07a3c0982987fc9ef7b822343a7d1648ffcb6ec378c5224e4c. 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/QZK6P2270895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3313cd7f238b9885d258d7b8db39a5a42a76fa620f20627855fe5438f3643. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZRP52226922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa35a323716093a1f2d302477b177e3ab7241f92a4ad4f2ee347130a9ca140f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZDA82498876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83864bb65837ba7ed2e2b91d01ecbfea93a775e320d3c3accb31b51eec3dfd4b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:27:22Z), 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/QZK6P2437921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb7227bd0be2f1fb1f963f6bcd7bd78fe140f9c146b757f1f66559c13ed105. 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/QZNWR2452026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3944e8af37bdfc6b41b8bc82c51adf1c20a501e4af3a33c1851dcf9a5fbce2. 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/QZNWX2465876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf95bc923463d7db524d0566bfc2352c274e36697cd88cb9bee0b89e4f0899e1. 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/QZPLS2491834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39864a3f53ff80e76c16705f01d90c929957e35b5d27c203f9723ee2ece6b5b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTB42483403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a8dc6546faa16abd3c954dbf7631a2123104df0e33699fe310cb2d919961c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:22Z), 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/QZWFF2444820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540d84c5688c7ad0cb53ae4969a948e80b1ac5ce10adc2c14619ea425462705. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFM2429785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c26df1b8fa20ebb4c4b0c261f9e5f979195f4944c0e565acc1b5a719b9bcf58. 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/QZZ762455739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f7c63cda09fc01ff261b977e691b3c3560b0ca806e6f4e338a9de49f543f1. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:22:07Z), 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/QZZ792428441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7596605cf4430f8657d856375d4e9ac7bded6707c9a449c9890c94dbcd20a0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZZ7N2428679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a6d68d08c51eea925fb771b2bd80f3759fcd5249217c041134fe0aade6cf3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB32551438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc5ffc9a2aebbf351d87991b1978be92e3217a5967b810249cca20d7face2c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTB32551439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1f2f1a38088afa205be13f829d9892304ee9ce84e9e968cebab2c9ccdcfde. 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/QZTB32551440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6fa4a8973cfe5e9eb5b05aeb0f0d42e815463814670df2532c9cd5a42cee09. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTBA2520744.