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 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 0x6279f0b1f53f8d7f5dcc7729c340e4ccb32af2a309ad6c95a290b42a4cccc6e6. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3e8b626-c516-4fda-89aa-efd36542f6d0.json and https://artists.proofprofile.net/proofs/artist/d3e8b626-c516-4fda-89aa-efd36542f6d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Little Birdy Told Me (Coloursound Sessions)
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 0xb7e83270702b343e34ceefc2605ef1ab437a2b94a92be6fa1f2936981547a487. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/AUBEC1601864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8db2532523a171e96847bdcb9169a9a2c1bb98daa2488156b4481eb131c58. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/AUBEC1601869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8fee598eed3dae357b759c6268be6b78de5a548bcd818f8386c6d2cbf2ccec. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUBEC1601870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d39bfada25ec7839501c1107fd4a6a9fceffe81b0c99f182d281fa4f674981. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUBEC1601868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9d53df422169f10093b7f0e79a4398bed77d8f60ef0a77d6892ca5f7f4dec. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/AUBEC2090190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6eb1b2c44e9ea6d2b93a849ec64cd859b5cb11de53ebe406e7108acec4258e. 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/AUBEC2090191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55c9cffa427b9cb128695d1dcf7b7dd709118ead69af20b1d96407cc325e4e3. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/AUBEC2090192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c746d2f4f9ca61e28f551e0e488baa26980922f3b24e6efc11eb1273f1e218. 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/AUBEC2090193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368bb8d711192bae7fdf015d9bfff268b752a733c1b5ff6c323574426f425302. 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/AUBEC2090194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165bb8fb9483d7198a64d6eabae3d7221c0a83ae8414e17d8526b01967e952eb. 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/AUBEC2090195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb63ee192d8b974663da625828f21b13777f23ff105dca20a64dd3189a304114. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/AUBEC2090196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e194fa639c7ee1b17dac0b1b41a693a0cbb028906f040c4fbaa65717478f1ee. 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/AUBEC2090197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfb2df6656b4f5adbc313c5b47ba9ce897ee4ad261251a6ccc2b87a0b0ea672. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/AUBEC2090198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bcd9b1124ae5848632ba73155650fa82be56e3f17f2d38e3eb1d8ad9e205ac. 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/AUBEC2090199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fbe9f85e1deb643321353fd25bee11f72137d76f95193e690e74a36df46547. 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/AUBEC2090200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56befadcf3d092d9d27752ecb30f4120a60210dbeda142ed04b8a6dff69a3ab9. 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/AUBEC2090201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbff477fe94593f73be7cec325f16afb1a42dfc7d2398baf24e926d98abb5d57. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/AUBEC2090202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999515f1f43a8caa56f90d9339be353dd2d51350b3a9a3dc68168fa7a81605d5. 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/AUBEC2090204.
Wicked Witch of Wonder - Live at Cherry Bar