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 0xf7af6b50dccc311233680d754349fde4037070a31c8fabdabfb5874baf866b99. 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/0f216277-f4e5-4605-9941-121e9de0547f.json and https://artists.proofprofile.net/proofs/artist/0f216277-f4e5-4605-9941-121e9de0547f.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 0xf1070677be49d0926d9bd947ebaf46c350f79cd9e4ed4a70d5838eda2e9eb558. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/PERL12100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4cdc70d1461b5ff7d2f1a2fb6efe87b2ed0367a0e06c45ca1eb760011abc2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PERL12100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7289fc118780c8810b3493074438c6041565e671d6b49425fc11aa5dbe316a7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:54Z), 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/PERL12100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b18f972fe1fa3e940656fe76f88aff93203a9c19f4761a5c33398b1602f1a59. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PERL12100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f06deea154e08bba65e7065be1bcafb47a3d2630daf725d3733551e0750a17. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PERL12100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbe65fe0591ac24546e4a4e7c6ceb0774a1ca78fd4783b4c0dec767d8a0fcc2. 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/PERL12100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb614d55327199e069998db1870dc042fedc4dc18e296c2b2826c7677bb1650. 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/PERL12100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b433ad1f8ad0454284761152d74e57739ff3664d24b7625671e7f561634ac. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/PERL12100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132d2649dc05fae5528682af57ac821a8761e3c30525a1fb7286f2ee2b83802. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PERL12100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb46a9029144a17c2ab3d34ce9ec058b113336c0fc376324f354c0d210f6855. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PERL12100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7f0322fca71ab8a171cdbcb36399d8c166871ee8322c5fed75818d57d8c73e. 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/PERL12100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5b04f971128de7880227a07998593f25534d3faf4f355b8eac1a2c61e55c5e. 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/ES71G2200853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eaafcf93eaf531c9f1ee3ea25ddc45d8d730a2e23b73d08c0182e2b9b31f0e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G2200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838beb1bb29ef51d519d5391ad5ee5d5fefa86fcf0f5c4c3d38bab3223e31216. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ES71G2200855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa1e8a28f790627896ccf07102d8468d324399475d6c130ba5458c6848e477. 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/ES71G2200856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a3e5fc79dcfbb8edc87a01b558b9a9f4e44e332ae8e5c073155afbfe091c71. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ES71G2200857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0233159cdc5be017cf48b10877e96e250bb141f542b23692e14918a5aac71822. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ES71G2200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71241ccb5580e7ad811474e8c2064168f4cec83a545f254c27bf6c8754fd51b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES71G2200859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a78f6c51dc4cd8baae68f47e8dec5cccc75e22691dde17015f5c5644847f3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES71G2200860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd454f5483f855c0458e8c7bc5553b43c036a78701ef689479738e20949c19. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ES71G2200861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3429ffc7244179781a61995818634cb1b10e42746599c8c18ca9e4088c4aa5b0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES71G2200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa1089cb3e8107dc4748d59af570a0e03c8882dca6a5ed5dbe62d1a4f6ec944. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:51Z), 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/ES71G2200863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3e192fedf59b9d7ea64dbca6110880d1432ff4e730c3dcbb86f4df4dc7ca78. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ES71G2200864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bc41f11c03de42e64651b8f59f6fb9df80a06583c2b14bb53ad56f14d33ac1. 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/ES71G2200865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff9894e3ee5fac7131983abad1c5055c9cb5a1e9a6c75490a2ebc437953d67d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES71G2200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca717a100b8336536a3714d99fe433031852d83db1290088ca9885927f455da. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ES71G2200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f77ae904dc05901782ec560d814ed07c4ce701dc24c742aa084a8517628d6. 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/ES71G2200868.