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 0xfe29ad07ca591f8f5403e83dcf0bb5dbf3569036694731b7688511696ba1148d. 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/f85c38cd-a53d-425a-a24b-4490f480a2a3.json and https://artists.proofprofile.net/proofs/artist/f85c38cd-a53d-425a-a24b-4490f480a2a3.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 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 0x20bc5f9faab320a8e559c9cbc898102bc6bdfc8fcfd455e2bccf78d7b71f62b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITI022300416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab355dccf7d094e66ceb1113485a2f1ff703e4c2f9b24c0f36ab1e9824e4297c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITI022200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbba93730574af66b51feeb3738d62ed563e1df1b36e406c11ca5ffc60ea792. 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/ITI022000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16aca4521c9cefde1876f8afcc62afa7976490a22ec2712159e5816ac3aa48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITI022000184.
The Modern African Spirit (Soulstance presents)
Treated Jazzy Colours (Soulstance Presents Maison Jaxx)
The Other Side of Jazz (Soulstance Presents Jazz 2 More)
Castadiva, Vol. 1 (Music Selection by Roberto Bazzani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec28865ffb4ab509838745cecaa6d509fce7755a7b773e57db11faf3329c3359. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IT0411300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f60d57e35f03d80312c83c2861aef9405a573323908882a9237e9fa25b8ab46. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IT0411300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc2885690d332802aedbfb65eadf03adba1d1ae5619b8fe62688522e7b01713. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59bf140736bde4ddc820385c83cb156fdcda1070b8e9ef85c89cbce65dca309. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fe8cdbe7f9f9df21ff89a721a43a366279c40d3bbca96102b277ed19154f16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786645634a3f55937404567b8f917eed1639c6b3e4ca5a60b028f492b289b886. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITO0P0200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07292b4604dea33bfd1f1384ce8021adc3aac556546ad2084eed21604b1f75cb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584311d2625283e94895504b00edca7ef0a23896c26ab70b19aceed52755c56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7094e879622d382bfed179294cbccb71b6c3492d96103c7b233eb61121ac8baf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITO0P0200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbe95115f6d2c1310b74475bd0cb419114ba3a4538795ba7ef2975d464d275b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITO0P0200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418868da33b4dde94e2e2bee900221e264b727e51fb76487f292353c7d893d7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITO0P0200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6aa2dda72eb9ffd9f593f14ac41e211ee6e480d1d718e5f2c847c87aea920. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITO0P0000793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238a71009cc0f472837e9db9611bdb5a329b4c404652068d258096c85c3040b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITO0P0000791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f81ac34c1b46bcf52b1c061739359397d94d8ac0cb52dcac0209ecd30407b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITO0P0000795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5226e6fea55502b026597fb54ddecdfb19f598f55788d13279bf1e55068578af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0000796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf571135baddaca5a59c0fee472b936c0322651261675a2bd735d97651cabbbcd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITO0P0000800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332545ebe2962dd58396d789fdd4e685c40f7a59a1fb314e1ea7834b6bfb050. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITO0P0601026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9df05d7ea8d242712d75dffd8acafd00650839461d2384136f7356a24dce74. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITO0P0601029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bf74ee0d8affc76830645f078be44a8b244e95dc9e4d6963aef8a153b44205. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITO0P9900725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02bd80c170f37bd639d6473d5d76784cc5b538a238d328a0bdc5f9d3e1ebcc6. 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/ITO0P9900732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf625c2efffc9b65ad33d532a6015c3eeae5db2c1bb090cc121fa468354011245. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITO0P9900733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0b114efb3c433ee25ccd5ab0e2c644b224f0d7905e77a916f334bbaf361472. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITI022400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b28261756a06fe51232718fd7eb3878ff17372ecfbb1b5a6b0b43c4b23c349. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITI022200671.