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 0xdb2d46aee253724e2b7fe0b16980a24c975d24f55cb2391f3521860e0626cbcb. 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/f1463a43-f81e-4d83-8174-0509b382ba64.json and https://artists.proofprofile.net/proofs/artist/f1463a43-f81e-4d83-8174-0509b382ba64.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 0x758165b7a5420a332009387786d3631b0baf9d976969dc04972d1c80e1582e43. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/BRVLS0300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d103021fd8f3a4c5df1598a568d9e89573101398479a7be6c41a4ef94707654. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRLXL1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693a8f8a50497fead058fb3f5bca6d2b8df034381bb8313c8c48df83e148147. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRLXL1400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7f16be1bb36e3b91fc7a94e3db5ece0174582ab2c86839e2740d46a2b4149. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BRLXL1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4703fa549332d8043c2a3dbd69555f8394d99a831d7494e891ccc616c7ab140b. 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/BRTA10500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99693184151d8f10c8fe7d0a341cbb322d76c43631d4a192ced43eba5663815. 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/BRTA10500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad895b5a8cb73c9f18d9cdf22d7d0e1c36b1fbaa36cc2571bb312e3a0aeca0e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRTA10500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2357b756db0e076ad341fae42b45892348f24ee57320957182b2d1e1e6867f. 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/BRTA10500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac4fde33833c0e8b5d78c0cd05797b93e331c17712eec9305cad9c5ca1d7819. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTA10500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ae57db0f0e774c247d66104eb7ad2b29a6e806356d21c350660112e027cf8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/BRTA10500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c68698b4eb619d2fa56381a699dce20cd3208e52f9dd589c6857e34425b97. 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/BRTA10500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa7733fd3a88bf1d2e0caa4c13c02e15db4a5bb8b900e3452006b6b99851222. 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/BRLXL1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0d8eaf60a4e8396ad5c3e6b4b16b35963c59c5ddbab1430b6e5fc2e0bc3064. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BRLXL1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97490ea5d0eb158d8d5b032d984721f25ceb951e819e70be802dd5494a6c444f. 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/BRLXL1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca554e38295aada54bd82aab963d91489d290edd365d8f1b23c502ca36018171. 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/BRLXL1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19162a501efa9419fd67ca7bb6dc44ac1f10f82284b8166e07f9048597440a48. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/BRLXL1900005.
Presente de Yemanjá, Agradecer e Abraçar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdabd22696aab9d5dca4af94dca7c943dedbcc8cfd376ae626a4c7f708ae3c4. 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/BRLXL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5988ebd7a0f2cbd7b387702b9109f6a8c7035e189e7603449a62d5329986cc53. 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/BRLXL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ab2660b3b32f2aba29e53a1e7a4cabe458f8802effa9275233fe60411cf07. 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/BRLXL2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658c076c656682f2d232f424eb8c939754713d58e74df643768001e377383c16. 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/BRLXL2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c4d9c0447a9bf6bd231f44c38c3f4dbd95e845a6cd8030248bbc69a0a728d7. 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/BRLXL2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0a3456892995470c81f84da17e421a767dd5de9552810df1b49564c610259f. 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/BRLXL2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fba8f82dae354c89b1510897a82b4113734c538f50ddf42f2797dec78c6b5ae. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRLXL2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60f37fcbfbee4696838e92dccba85fc7cf3da30093ace3012b9b94cfac7c3f4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRLXL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8fa8898411203a42c10b570378ece93d05d637c3649733fa208fd4dfeafdc3. 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/BRLXL2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ee5b3fb93f7b8efa24aaf4157c68037c6ff78844138214c28036e55e2874ba. 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/BRLXL2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40c01a3056c822bcc7d5734ba090eab96c0d0e363516b04eec0f1e2826fb0d. 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/BRLXL2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe528d0c6463369cf3795d8313f934f75675574d1faad004601dc34186a9c3d47. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BRLXL2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b982186c1d2e6d55395661fe09f13e8ee116f11361ae8ff02df72197910ec. 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/BRLXL2300014.