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 0x1b7c24db1d22e3c08882e0b0b96c21c3a519676d1850b6c4b906adca16902fe9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07921006-28e8-4e02-95f2-47a17afaa968.json and https://artists.proofprofile.net/proofs/artist/07921006-28e8-4e02-95f2-47a17afaa968.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 0x06031057055e680a42f1e11fa6f21a2f79225ab64f50a9119ea161ff1689e47f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZGLM2328602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b317af171b25b1ba042d897b73c1e0e71fd53abd1b4a92800013f07c0bdd44. 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/QZGLM2328605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb99c8b3a783e2df9a2d7f779625daab946621270bf2df9612eb41da16ff49a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLM2328606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc231c2fd3905600b1be90a4f365661a6299bff24995419b561e5faf7c7ebf. 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/QZGLM2328610.
Somos Joias Preciosas - Francyelly Nogueira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f03bf33b72308e71f1842f222568f6ba872d54871fa32f58012d3ac4f57e4c. 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/QZGLM2328611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39a4dceae1a0923553e9d552b34166c9628519b8b245a314deceac12045928c. 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/QZGLM2328613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462804f1a6394eab97ebec1e0cd25926b749a11b346baf49853164e4ba8663ea. 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/QZGLM2328615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4ae5b9fe58bccdcd8d9f2874c18f6c32fc901eab6532d03ad238a8b4900649. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:56:56Z), 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/QZGLM2328600.
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 0x0c3a6304f5ae0593f3cfa3f1e174430ad5b3eedc76d66c3c83ea170c2d235d91. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:06:27Z), 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/QZGLM2328601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4fc7e7045f3b17594102d28985f80607a44fbde681b19d46b240394f6f0b2c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:05:16Z), 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/QZGLM2328607.
Quão Ditoso É Caminhar Com Jesus! - Kerolyn Nogueira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77ddccf1c09d866bef58aecd438699b1e249362653a75057318ad8594a61df. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:32Z), 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/QZGLM2328608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6619fe2ff0f37f66e22d585b783e43584c241a2aaf3904c1769b8b947464a9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZGLM2328612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ff1bfd44e55a61e4e971c726c0e5ff3c2fda7759b0f5adea7ce4f02845ee00. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZGLM2328603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e967e4972bb50dce831f554485fa876c86dcfac0f6476a9a38ff3f05ef48af. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZGLM2328604.
Quão Ditoso É Caminhar Com Jesus! - Francyelly Nogueira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d4f822a9e9d3eb0197516f5ffeb743cbefe6da01de4b886cd2d4eae8c412ac. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZGLM2328609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312b8bcead9fc5009091bebd093f73e82d2dbb573aace13ed01437e31d82afef. 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/QZGLM2328614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d110605a1bd1a7ef1ac0104376f294cc1febacc083af5513ab111b5a49de4bb. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZGLM2328616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ddd9591213451b774187d0a8a8cede3e773d1a3e389a2540ff6e5f3b3a2ad. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZGLM2328617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f36ee02dd79305bb5147ce437f432d0996085162e027567ef91b2f720bcfd4. 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/QZNJW2197245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b505577e48043e8a7857c8db5957cacf9754d805098a1d80c8920bc1037a55. 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/QZNJW2197246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d862d63efad6af72ada15eb9437c73c549eafa00cb07ed141550fa5d1b5761f. 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/QZNJW2197247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3dafd4f5d9af98ad3f81c8ec379e996f97437cbe86bf12adf2aac32ec2a18c. 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/QZNJW2197248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9d03499973720e444c8c353b09842ff3cf6a367caf55f02de3259bcb828ff5. 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/QZNJW2197249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faa18e51af03c14d9b85f84ecedceb29fd1db1675b711af7275aaee59fcf1a6. 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/QZNJW2197250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2192ac46c8b4aa91b17c1641dc7f778aa0c2d27ae364d61aabf643945a246d8a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJW2197251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c1d1526aeb8f2c2aba5871ef7880a1032308ea02136efab9c5808b8a129e80. 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/QZNJW2197252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aa7fa1e78b297cca23f8e75a6d4226514533ef4c84e7c1c44fe2997cd1a0b8. 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/QZNJW2197254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116d3863c09297ddbbac8dda604eefc0790a3c48145292ca62171b9963f1268. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZNJW2197253.