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 0x7488dca70237690127662341c458cbcec3ebc834073b5b5ccb1f75d62e81bd8e. 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/9b6560d6-a8f2-437d-9b90-bc4b3b9ac14f.json and https://artists.proofprofile.net/proofs/artist/9b6560d6-a8f2-437d-9b90-bc4b3b9ac14f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Belly Dance! Classics from Egypt, Lebanon, and Syria
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 0xaab1ba40d98cc91cb14fb4026aabdba15420fdb892e4ab237099088e9c329bbd. 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/QM7281744539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226b69fe82875039b8e9dbfa476b71896ab20ef1673ab8148e492dc4b2301ff3. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QM7281744544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bffe221d8cb6ee4bc744376d69bbaa2f91b9251d5ee8f15225e8c71d8cb8b6f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QM7281744546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdeca40611138cdbf31a63586a4e062908720fcce8e834acdb99b81ac946c56. 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/QM7281476438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791ed9fe923ecd9ac85a60188ccd1b794eb202aff2a93a95ed32d3a85ca9bd73. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QM7281476439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14a7c5920651a41fff648a26669e649c9af8368cb2a5159605d573c2e907774. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM7281476440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46a3c5155c63c0481e2a13ed273e2d8e10606337a9da85bd79f8a1b5fa61dda. 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/QM7281476442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1025cdb1b760b93a0d49346460793c958254fed4a10cd35ffc8d1df1cc96d68. 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/QM7281476446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa292ca5949b591316ce248ea1c4f29c0bb5e67ef561fc22d8671acc1f70b38. 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/QM7281476448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28443fee77afe4817344071f476949052db3282f00c3ed21bc429d13482e585. 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/QM7281476449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65daee3d46a44f57cd74634d2533a37e1d394874161be1824731b6c2dff19b7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM7281476450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c25fe2d96cbcc81725cc179e839a2c3c1349845cacbbe019d392318f581e9d9. 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/QM7281476451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b96b330e7a1f648e97162b96170803c1515069edee6de76c7a94f60f9cc3a1. 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/QM4TX1538362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04c0929dd1775979df1fc3f431b4fabf50ed229ceb9d0ec70bbf89935c1c7f. 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/US4R30708182.
Belly Dance Delight: Exotic Music of the Middle East
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b55ed9b15a9382c6feb2d64089c7746b8555b5a8ca5b723d1d7ecc38f41f317. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US6R21495927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f9f4239864422ca6ddc201ac30956266917681450c5696fd276e1b713b76fa. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/US6R21495938.