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 0xbbc84fd7e243e7f2447993fe6fb862f649bf71d3e727c496515db7ca04816d0e. 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/d8fe38a6-8831-49aa-8292-f2059f463cb5.json and https://artists.proofprofile.net/proofs/artist/d8fe38a6-8831-49aa-8292-f2059f463cb5.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 0x120d9f016d20b0e226dd43618dcc75d1dd0e73885968997e632dea38c73749b0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:48Z), 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/TCACK1518830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb250bcd3dbf1ea64b78ddc0acb3cd848e665bd57df0960931fc45ba3dbd8b65f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCACK1518839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e1580efb9a6da3fbe4ec01942e0b78952be7acd851a4d95d478ea2482c51a5. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCACK1518845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b2ca47c8545b96fe8ef0ff8795f1abe130665172c58c925c8311882714f6b8. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCADF1751138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525e02e60c695019e0633a450cc5815ff71372916bdb77c61109b91d55f2c72. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCADF1751144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19471bddb16b48891d3edd8c0f48551b3ad124f66b5a197a06badbb827953896. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:25:57Z), 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/TCADF1751147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa496678b153211879feb3457242fe6473f785761430bbde9bd0dfad633c8534. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:45:04Z), 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/TCADF1751150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e60de243ae476d5020cc4e793f45cfaca9dc77ae0de22f4c32855d4c7a0857. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCADF1751157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39fdae855f59d3ded2ff01ac8feb13a03dddf3e157d6acf3d207b067e99e5a8. 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/TCADF1751176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29725549ad1c5f65beb70a0fde86c5900b468ce5adbf54776969ff7773c320. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDA61953481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d62dd78cbea9bcd3d2bbc7317b36e023d1bd8ccb6549d1381ae36b2fea5e588. 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/DEXC82100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd830d361d91054bf8b05f11abc98e691718edc3b771f56d5bd5b28341ea89. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6K2131171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ced62a7d44c49e8a80bccc7ce9203f8725fbb1a311dbb8c87ac3bf2e94e34e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:19:39Z), 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/QZK6K2131173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0697a3e71226083a2f00b1c8d2a24077f8830c0f88f9297562f012554c9b7a59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6K2131174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94d12ecaec4795dbd275668e2d71ac9d14ec855d0801f3d4e1a8d185fd60cc0. 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/QZK6L2136703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b433e9cc00b3a7144969fb079bfe3d802de03b8af935e16aa8539beacc36a29. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6K2131175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5bfa71817bf4231f4a9a7c490c44fc12e504686f3de9e20aa1be83cb113693. 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/QZHN92153380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb388b45461a26dede52e0ff20674b16bd98d9714db2630ddeda6f301d5943140. 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/QZK6K2131176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7764384cc8cb0d004f3c684ad004d9c19ed33070b6cdf6cda755789e90c8b624. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6K2131178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5e64f39667eb921de357ef2b9a04dcd0bff5ba7e809055731e1e7ee6aeb33d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR2X42373829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631de627c92ec598a4f724e3c014e7dd95d41355bc9b41e6b601785358f95d6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NL8RL2437653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb186e7837d1cc1a212f04291021c289f8d8eeab697a62373883bda35b285ef. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NL8RL2438393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe723b827e04a9e620eee81547714216f1312f4ef926d449c30645726286f8278. 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/TCAHX2495091.
Africa Express Presents…The Orchestra of Syrian Musicians & Guests
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d00fce7ee66c2b6d20b423e725fd42faadffeed90a0bde03e6be8aeafbcb93. 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/GBKZV1600075.
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