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 0xd1d801fd888680c2e0c31b62d13f7f524f496514c8a2ac85ac357aaf1693bc70. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82c0c409-7502-41bf-b693-c930385b7f91.json and https://artists.proofprofile.net/proofs/artist/82c0c409-7502-41bf-b693-c930385b7f91.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 0x5579366019a5dbbbf625c628e3679385442e25b85e287cf3b47e9bc53731b8d2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:40:46Z), 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/GBFHQ0303392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b0d2d6d9e0e6b88e4d591c272f99414abcf189715a1443428ca8e2471bdfe. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/QZPLS2209085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a8980aa87281dfac1b13d1a4ed520b2d5c564680553a65762bd2de6e78d8d1. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/QZTAY2297654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f976a97ef2a1608999866ebfc169a9f8416fe3a6bf0c7672b441e23f8041fa8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:54Z), 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/QZTAY2297655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d724514bd76365707c5396bcfde2ced367b0bba87acc8320d6126e6177dc634. 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/QZTAY2297656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9aebc2bdc94d57f0e85b05328ee9fc1bb250518bff168b6deb673860934861. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAY2297657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acc15400e571a1d9226b53ab879c3e414206a32bf4a17d876c864a5ffafc553. 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/QZTAY2297658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee6b1d14318f9a4ccbc797af28b51dfdc9f921d2d78d6104487f60e7f34f582. 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/QZTAY2297660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f61a69f046a333fd1f34a00c710b4c3c3ec2dd70488ea590da8c3184d848330. 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/QZHN62439050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ddb342aec8984e767cbd25d560fd90102b4801e6d6603ed7a95130da3709e1. 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/IELRO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee013bb74da3c23f4edf3e7a9bfb1089aecc4e254d47fce908d01afb761f79c7. 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/IELRO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34f9c4f22a4136d2a170d25caadea78804d5b4fb394572d3a97e96d12ffde70. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/IELRO2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a40d5e8db39c13304cfab8a8a31b54f507c0a46d3680a2c181029dce64731a1. 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/IELRO2400011.
Dún an Dún / Close the Keep (Act 2 Scene 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16eb5328f7695d2e564d467095cac512697ad6a390aa8b16fbbcc4801ce5db. 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/IELRO2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde04e41861f09c2555e204cff6e35d141c3fe77caee6d65e1d5479bd3430f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IELRO2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64d0b6aa2440eec1dfe1addc8b84854644d5871b22605de6262ecf5c01d17c. 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/IELRO2400019.
Coiscéimeanna / Footsteps (Act 2 Scene 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e8d9f34f860e07f56c4dbf352da66a511a8117ef91aa9fc63f349e542ba39. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/IELRO2400014.
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 0xa4c19f175533bd9d23e2c3e6c6cb8b5b541ed79048989141c03b74198bbcd4a8. 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/IELRO2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439d8ebeb2be85a8922b694f29f988b137a1e4630f38685572ff880392a64e2. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/IELRO2400018.
Fíor Flathemon / True Lord (Act 3 Scene 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc101cce7838da766bc5007bf760884b7b62db419ff54e591140e74bac6a5340. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/IELRO2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232bc739629c541dca8f415ee0f8521d18b058fa24c367f05f817729ed8e6f8. 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/IELRO2400021.