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 0x5cbe8e4d0471e9c2fd754ab5392c6d2cdf8249221ddf72a50a925ef1741bdcbd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80e4647b-9263-472c-b579-f046266f8861.json and https://artists.proofprofile.net/proofs/artist/80e4647b-9263-472c-b579-f046266f8861.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 0xcbaeb847ac759c8e9ce407c0f50651ddbd80d60b9c878f80d19c94783efbcaee. 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/GBSMU9156382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a5bbf114a1a2ceff46ebd329531bd2d9be13d3d25a7a47af3d03ce4ea18956. 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/GBSMU9156383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd066bfc3243340b9724e5b00d53adc1b6af5549fc7725712f8323e0d8168d1. 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/GBSMU9156386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9a78c5e8a56e8d477e3213289b51fd15745eea88dc4efdb2aa494879fb0aef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU9156387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331b46451e28054b560436b600620e256a631afb5086e69775e86c6d539b39f9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU9156390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0593ac361fd83d74fab1c73ce9ff015d334ef99be983a1f0e593e4aa04df7a1. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBSMU9156384.
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 0x2286b22e36da2d37bb235fe209c2f528b8e80f5b728ada3bc742452b76875a1c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBSMU9156385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3322dc09db66a63d1d271a420e8e6acbe510fe9e7cf1ab15c33a2bcf442b6f2d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBSMU9156388.
El Dia De La Bestia (Con Bizarrio De Cuentos de Los Hermanos Grind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835dcdff1e6a8c12c4ce0db3a1d52c1fec43efeeba2cdad34ea27e409648f00. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBSMU9156389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0621a7d252815fabb93c6669651f30422e8557027fa2c446a8920290fd9f0. 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/GBSMU9156391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c8564266a5892b92875f72901f6c60ef46e732506b70b36cc6f113d0115eb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBSMU9156392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce29565a1e3cbef7145ca74b482fd54a10448a78a78b9c128d2a128a63256593. 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/GBSMU4638317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6700d7babc21249303ddfaaafee3cbf4aa4ea52afbd03c6e50ab205b6ce41a. 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/GBSMU4638318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba729603283a91b2c0061b3ac7b563074d25a086dc5d17dba2f35f9d2b2ddb55. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBSMU4638319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c8bc97064776624a3477c0b8651dbb4cce3efd42b4a8cb43623d6dfa520776. 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/GBSMU4638321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167b322902b3164337d8a1a3b641c5b016fbc800825b6b77f76ffa8a895207f. 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/GBSMU4638322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878810f679924620baff98b60337ffa701cd9ba79948e839246c9ea94e357c95. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/GBSMU4638326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30045465b27c2871fc2fd7d8a65ba2566005029e256b24b200449dde0a95c274. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU4638327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329629a3463f4ae2a17128b67f312bd911d8676aa3aadb5043019c42d44d89b6. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBSMU4638320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d183832798e4e5a94f6891874f382bdd45d9db6445aac5aa5f584c782a13d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GBSMU4638323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0e85fb7a8bd3c228b3edd34b71be5e20fce8634af75341f5529378ce0804c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBSMU4638324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057ae6c3f5f32c049a546b79628565b094145403b42ff9b9c2cd8b794432547e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSMU4638325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbee6fbd79f43f0b2daed6157d6bd1fad815f4d8ac1dd6476fbf8fef2924bc4. 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/GBSMU3370900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d988aaddc45e035fda554612ad9a905b2e49aa3b5567398ad18e32bc2f8ad24. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBSMU3433555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814584e7db3277749be89c891734f714183ff6234b113f5fcb7fe33f5cf443d. 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/GBSMU3370903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb12018f534bfd6f50b317cb1bcba73685ad5d9f60d8885079451ec92fd7ea9d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBSMU3370901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c03db700e4c9b8c636af38400478ddd8da07cd34307ca6a64b1e3b4399800. 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/GBSMU3370904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddb1c71635fd2701ab5f1222e40c9db043a56416c451ac30ad6335740ebb1d5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBSMU3433556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02792f677b7927dda1dddb30e9849be9b8548c37c924358bda681d221e5e74e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBSMU3370906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568a8fbba06f1af39c54c23df63ce42cc1e99ded77e429e74242673c17a70318. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBSMU3433557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b513b1d3e7f159682bd4fe4976c4622c6948e6fc9f07b0f21300175acd0c8. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBSMU3433558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502fb01ddf622abe08082078948b24a695e341ebc1cb2ac5926b0f362abec12d. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBSMU3433559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c8542e6ca38729bbb18e35c0dc235193c14226445e5fe148c9d7e11f14e304. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBSMU3433560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a33221780679507e70b6d5acdc8de099ec87afa925c8cbd0e8fd888f4d271c9. 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/GBSMU3433567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35083121e5f3aa1f417614b7303315ed2ba921c42d72a0a4d5c1c1a15d20fb79. 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/GBSMU3370951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a07663f0133fd0925d644e993f5b365871233e4691380046cab6bd6e0db9120. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBSMU3370947.