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 0x019a737ac411f9748420b92060fe62661bad7f4bfa5f9bfdf956c6af74833bcc. 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/d99536db-7557-4da3-835e-0ce5e965ec6e.json and https://artists.proofprofile.net/proofs/artist/d99536db-7557-4da3-835e-0ce5e965ec6e.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 0x4dd79ff92cf35bc094f663ebafa0634b2bbfd299b15a5ffcaf38b228fcb503fd. 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/BXQQ32000029.
Orixá (Dedicado a Meu Pai, José Marques)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc03321b1eb5d39e3564cd3e6a276b2804047e0d618bf23bfa256517b7db22. 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/BXQQ32000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74c03b56240f6c2be025dd7eacb7138ca441f5f4134ba8c3485f9fa20f34eda. 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/BXQQ32000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277ed02758d971079a5785bdb9a6fb89aa0af67cacb53e986ed463b23c1e67b. 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/BXQQ32000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169bdebc382ea25742d8d38392d07d282846c4eeb5c28a153c8d05b88310dbc8. 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/BXQQ32000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2bee21addf96651155fa58760f77f3504244d13ff71491cbbec65ad193c7a. 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/BXQQ32000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37beb1f5caa28609f14937a0caa03bb241c0bae49f048bcaabbbfe1e919ed23. 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/BXQQ32000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b90d00807c86f1249d3b9711acb1c6652e0152c86f51bcf548094715526e54c. 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/BXQQ32000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a84d376556320ae1caf0374f0170625ff5d936c7be4f0ac49783b96bcd97f. 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/BXQQ32000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e0ed15a84a29cb7da4418b4a5f124c7503dc5bb8610f0d2a758a93bd05c9d2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BXQQ32000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c38666b675a4f9691b1a52010051e44ce0c6637a1b3a8d6441ecd055305c4ab. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BXQQ32000024.
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 0xd5bd8eb318d72203710e6444e586b8299b47db30e1b0b28cc540b44277477d80. 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/BXQQ32000025.
Obi Orobó (para Mãe Edelzuita de Oxaguiã)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63d10bf3b4ffab29c60a70ff51eb67a5f7d7a98a09644ff6fc258e0e099da40. 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/BXQQ32400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2e8fb37f88b3b36b0e5272fca41df49af165d9bed38d1df362ac0d8235b490. 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/BRUMS2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5a9164bf76d654dfafd356fced04a28cc94ca2f75d88d1a0b84cbbf195af1d. 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/BRUMS2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f409f752595c73c05780434ed73b86fe9f57ff332ce51dc163a356484668ee0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BCSR12100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650fba5f44f9e4794eb173c1f928a1a51c4a30d913a22bbd59b5a20584665260. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/BRUMS2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12f24c58e3ad217c69e8224bdfc920b8a2c1200a3e8709150e5956a18d6635. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BRUMS2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b2ed5f1f42b0d03296c64b582be92bcb19acdd7b6497a88c2c5e12f12717cb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRUMS2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee049f001e929220172cddc2a3c1d2cf18dc9903437386570b5935f998ee5bc. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRUMS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e3e1a8cbbfed5d5de7ad21d46b7e70ad32a89d3756d1096ca0a579dbd4d47d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRUMS2200011.