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 0x96809cd204abc0d04277bc3b9da4b65963130e1997564b12dba7b7c0d53d6531. 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/5cf3c975-f5f9-4af9-855b-77df07189750.json and https://artists.proofprofile.net/proofs/artist/5cf3c975-f5f9-4af9-855b-77df07189750.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 0xd941e63dfb42048966be6df931353e056b15e3c259cbd7c7fa29ad9a53e5e1bf. 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/AUBEC1926260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0c39d5022dd5e86b9fa7a6a354372b1fc00615b6787ab10fc0af88ba3b0dcb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUBEC1926131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7f9e4ea07e2b3f4ed32f9590f6afd3908b5a66b9125c358cd2df841d5fdce9. 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/AUBEC1926133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a5d6688f5854a667116780a479427e53a426cd0d6eb1d461d6978630303c1e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AUBEC1926141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4520829a0acfd8316c0a4708c6347ecebe78c8a73ebb104478ba511fb36c2b75. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUBEC1926144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b69d7e81f23d5ed0dc6b4de916bdc848174dd44c688efca1bf42dff3b2f0927. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/AUBEC1926145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c24771e61c85bec605f97b02e5fe2663780258401beff6edd2cc4c02d3b1fe0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUBEC1926148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab8d2d17112d85e7b5a8a81d7eca99e013ef26620f5fb78bc5565625483043c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC1926714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ee36926a59f6832338b5bc16ee32e34281129413375e7419a3e6f72133b8c6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA21325286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f650a8b6aa4cd81356d3726440517ce2b16ffc1fb8fd64515d06b8c7dc85c3. 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/GBMA21325288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc739ec474762d19ba2ef9f674e98b49e872c160b864684407451eed0439a958e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA21325295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4185aa12eab94fe358a6b28aa0007328707e1e6c3d1f685ce2a69180db800274. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBMA21325297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b270e8c7a05c34bbe2c1f628efb6ee0d54f1e71cc941d498f6420c41e88b1a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/AUBEC1928796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf7cfeeafb833cfa197ed49061f504e3ed46ba599d9c29d06528c9eb413a81. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:31Z), 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/AUBEC1928801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671adc0f2cc942a09d765b15d12024426dcb46aa7b81f5d7db579d8bfef6a124. 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/AUBEC1926301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba57ad9bcd353a84ab14900da6c1d3038286023715e414d5822d1bdc9299cf1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUBEC1926305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc023c5055abbe71648f18b1e6f9d5d450347d65047de835b2b4c4380f247cec. 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/AUBEC1926307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5264d7f9ba4b9634c2bf38cb7a08a4f8182425d928c7d790c411d5b8559ff2c4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/AUBEC1926479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374da14e69ffc18406246917ea16b1ee0a3e6a27b6ab34bd29cc8ee94a414908. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUBEC1926493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd0d29f0488fdaf41f819167aea9753f30ef8a0cdd7f9534dc3469b56ea012. 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/AUBEC1926501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553560b5d3bc9ac6fc788a47ab4e2abbf00c876edafe7dcc64f974855b02e47. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC1929914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07b785766d8587ff2d110af795df1f540a74a4331f788c31ed84828328dc4f5. 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/AUBEC1926445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5049c6d93fc80f466d4c973d58a088bbc22e2d90559a69adef282109018986. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AUBEC1926452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767acab033ff4400866bb4213e7d7a1052c1c6b5e3f60d682769aac7349d3227. 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/AUBEC1926008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2265c90edf4a0067a41a18199f9a8521fa7fc6b5ac533fbfb0097606dc5b62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2303753.