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 0x93c8352760c50f3e33f3873741c170d06e2eee549e16a76e03e235019c493ea6. 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/51fa5628-cdfc-469c-976c-539358b6584c.json and https://artists.proofprofile.net/proofs/artist/51fa5628-cdfc-469c-976c-539358b6584c.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 0xda43761295250974b5c6be505bcfbda3b7d437b8e3f23412389d76761de9c99c. 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/FR8FB2209000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e3c7070179b9d1725bbbd12b4eaa24b1bb5f15c3cfd5928b8293dedb94f07. 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/FR8FB2209230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb180e9cb71367ffaf1b206299d1b7cf1c7a6dbbe8e97fbb2b1a451a394c53066. 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/FR8FB2209040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9884363992840712c9d4423444fbf37b02ac78c1dd23ec93159ae66134bb1fa. 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/FR8FB2209030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ced0b79f929596b4724014ea2e2565c5a7f5f0b005b7ee6e969057412aa187. 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/FR8FB2209050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa253f2176dc26e1c34c70ec366ca304b35d4ecb23d84467b73b7fa07374638e3. 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/FR8FB2209080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd01ff5fbc4101968e038137c90af30d180f0fcf0a2c8ded57c2c474ae7fd00. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR8FB2209070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003ede7d6bb03fba472e98d907a882a5dc89c1197ddc0b5ac165ed6394fca8d. 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/FR8FB2209170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659ccab3e48502555d6431a97e3d424fdd843a4d6309b4bad3bf995b4dcaae1. 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/FR8FB2209110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff231a0a660efa326839712fa391751543e9edb750a8bef20474fec278b25c8. 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/FR8FB2209010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5f357dbd345b0ca9b9e48dc7b0eb8e6c6638bd70a8ef34504278b59da8a9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR8FB2209020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9884363992840712c9d4423444fbf37b02ac78c1dd23ec93159ae66134bb1fa. 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/FR8FB2209030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ad357165e8734df1405cfcb516dc49bb6f7cede48849d99fcd10dfa882281. 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/FR8FB2007900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb180e9cb71367ffaf1b206299d1b7cf1c7a6dbbe8e97fbb2b1a451a394c53066. 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/FR8FB2209040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd01ff5fbc4101968e038137c90af30d180f0fcf0a2c8ded57c2c474ae7fd00. 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/FR8FB2209070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ced0b79f929596b4724014ea2e2565c5a7f5f0b005b7ee6e969057412aa187. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR8FB2209050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a86b9f67ccd7b9a5e1c768344be50529d9c05361e6919ff383ef95092313dc. 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/FR8FB2209060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa253f2176dc26e1c34c70ec366ca304b35d4ecb23d84467b73b7fa07374638e3. 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/FR8FB2209080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b520dc80458940c3c559025b78895856287ec749e867d2c8fa71717fc7a62. 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/FR8FB2121900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb818b2932ea5398882d28b88aee7dcf2e37fe209ae04dac0a52c944e560392e9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR8FB2209090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3793d4920b136fd262985e6ec0dcabf7effc5756145a896c67404856ae52d4. 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/FR8FB2209100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659ccab3e48502555d6431a97e3d424fdd843a4d6309b4bad3bf995b4dcaae1. 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/FR8FB2209110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e30fb1c1ba12a4020fbcceaa16ece499f64de7ff3ecfaa295028c84a17fca67. 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/FR8FB2209120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b6bcc596b1c4322b8e7a4dadff69de1c37ca964b9f0470f255c63681e5ab3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR8FB2209130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736108e37de4a676f69092a4d82e7faa1ccf5902f57bbf7e5c0456464f24032f. 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/FR8FB2209140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409f28e40696ce06159b70ec2064727342e3be4df9e432b315a2c82c36a1ee75. 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/FR8FB2209150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c0a4fb7706781cb2789b04ab7b9f10798f27ac665b89888acfe064d43e691. 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/FR8FB2014400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003ede7d6bb03fba472e98d907a882a5dc89c1197ddc0b5ac165ed6394fca8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR8FB2209170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654bda3e0e33f2f3b97dbd41494e5d215f7f5d48df313ded800fc8f83431183f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR8FB2209180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0bcf30b1ee4efe23d0b8d9992895015736518a648d0736f0577c1d0c73861. 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/FR8FB2209190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67947d956fc0b182bc5a332ba28c1f81f24927533ca52cf44af6d51539dc402. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR8FB2209200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fb815b6a234716494b6b063fffa9e38c081c5893170b9db222e449e629a3bb. 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/FR8FB2209220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e3c7070179b9d1725bbbd12b4eaa24b1bb5f15c3cfd5928b8293dedb94f07. 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/FR8FB2209230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda43761295250974b5c6be505bcfbda3b7d437b8e3f23412389d76761de9c99c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR8FB2209000.