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 0xc93cca3288e7df7dc2dba56a9999f9c615c196a2990f8b3c23f8a1cd70a68930. 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/fc724682-ae8c-4531-af47-32d65663a127.json and https://artists.proofprofile.net/proofs/artist/fc724682-ae8c-4531-af47-32d65663a127.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 0xac56c67f0e636e45dd5b2a9157daf390612733dfc0dade6edf3e16751a44ae66. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BRTPA0400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236c83e624ce8721767845220d654294a6423f47145309c437d5d6ca103b4a6. 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/BRTPA0400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd187c495eee44c7ef8af2cde9e41680fb37c8bab3da2a8b92c1ee6cd69e554dc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRTPA0400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d7b7da3f6c9316c89ac31a495b9890c72cc7afbcdc3a9458b880664d96aa9. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/BRTPA0400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded41417a7794f61902ad827f550c9bd905326ec6600daf70964864361ff55c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BRTPA0400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedcc29ff71fa62ef88db92add3014d2ec7b571adceab9b3a380f65c15d8c84b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/BRTPA0400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1cee9c66297464513297f7ef69e573da9347ea5cae183606ce8782fcc72c9e. 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/US7VG1809495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe317e0e71a394c0e477e0f337f9ebfd2343d5a35c832a43a46d56076f8a3056e. 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/BXMUD2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543299f3c3e74d091c3051ff466f0a3bc0a2be48a37613d175be6df27f1c21c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BXMUD2200027.
Soube Que Eram Dois Os Meus Erros / Desvencilhar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2f4101912136bb37c07c2904f1311519cb08b8f5693fe6a909161f8e242300. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/BRF7F1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7969bf67e61674ab4ce2847b7ce71519a195711467591979afa1383012691fb4. 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/BRF7F1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44507affd7b2728674f4efcc7ac975f87c266cd6fbe13e6de3b8c16e089d8c8e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRF7F1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cf9fc59be8657dbd29c474032032e6522c908bdc36bd4799f8ce0ca3dbfc22. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BRF7F1500009.
Soube Que Eram Dois os Meus Erros / Desvencilhar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433c0c4c89a3e805c405621e6ed1ac8a777e192b9d6d276254b33cf81ab6d311. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/BRF7F1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4973822fa755dd088c0a9c68eee7a4dbbb4817224849e23f1c675a0dd785dc19. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/BRF7F1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3fd918766e775f1394856617c4f3a6cb9f0d422492ad882c70fb2e59828c39. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BRF7F1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f5e5c56ec65325b86f48ef02a3511d4312750d710cd5ffb330ba46c088734. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BRF7F1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdf04fc9501222423cde676f7d0193e0eac5739b9fe2bf577ef3a6655881b5d. 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/BXMUD2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd7be7498f7e1e89cd7cccb552d910b54eb7865baed30624dfd9d6e205d778. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BXMUD2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089d9d662b1778062eb1b618f6049e028eeb6ef6819172e3292b7b6b9fe858e0. 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/BXMUD2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20393aa8d19a3326f6e8d142ecd7836610cdaa7310541d7c650881736ee4d4bf. 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/BXMUD2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56513f34f4eaeb4e8f26c9b8d31b700798a114417f3b086065ec35deca9b8076. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXMUD2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019ff955ff877a9093439e9dc5e6c48ff8ced4442ccdaf86d17683250490ea88. 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/BXMUD2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a3c63168709c05d50dc014f981447b4ef6c3b5e6745d3445d8f11d2278cf4e. 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/BXMUD2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5194d4453bd324399c8602779525cf247157fbd5e8d0b40aaf9edcf10e7bd99c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BXMUD2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a493edd1e23054158222169fdd11dabf8766b8da83857828f4edfcb51dac28. 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/BXMUD2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeddb6b1bc8f461731ab5d2ee017855d6bca1ecca7298fa42d787b3afe94a5f5. 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/BXMUD2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b5ca138b631042f750387ae77a5134fab33938dd17e3b100f88066dda271af. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BXMUD2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd25ff3d99c218238a6e807a14fb961d890cb92e360a8ffd460496f67fdce76. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BXMUD2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe143b0dd40de3ececa9cd322e5d6f8318977a55c8e5ac040582727191e61319e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BXMUD2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6fe8880a45b3805375d6dfc49be54559399391a51de3691980e804772509b7. 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/BXMUD2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2bcd387fde19552a9008518bb94361141fac0da691be5d7097771d7c87912c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/BXMUD2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f2896d7ba97113947682524071d1c2f5cc3d47b62583184603e3ff55f5ac01. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BXMUD2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4f1c25dc76ad60e8fd5ffb39c2e168b42dc39dedf3bfc26795a312fb34c315. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BXMUD2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8625e1d1161c2310194f9a4c5b9e4b7ad3576a533c194547ee8a647a8e23026. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/BXMUD2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6859cadfe1867a273b3263cbc0f4d052cbcb37be9b5c6e6e159a591aef4b7ac. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRTPA0500071.
No Princípio Era o Verbo - Babylon by Gus, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b61b180af82b2a4d065dcca3722bfa223fab68a6471d3f5fc16e497f79376fd. 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/BXGT21500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb2fbd87c80c461cbf1bb79d09f25d0c309825820aa16afbb6e383ee7b187dc. 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/BRR7U0800010.