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 0x1c719f1b7ada1ab601aad64714b17333455e9c886f69805ed4e46449a4bc847c. 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/d0042db7-ac8a-4230-b993-6cdf1f9821d0.json and https://artists.proofprofile.net/proofs/artist/d0042db7-ac8a-4230-b993-6cdf1f9821d0.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 0x5fce34aa2547568a64ec799c3c51947e23c613d716382254c07d557666de7f41. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4R31109181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07205786f01662d19f76576efa72e179fac0648aa8488d6d047f604bd51bd81b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R31109185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d7e090100c5416605e57f6da1c56373c3212714c5b276aef463bc45b8a8d8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R31109187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce7dc443fdc03dccfa858258682c3a1942ec1f2db8ea9229acec234cef7598. 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/QM4TW1587902.
Rannet al-Tabla / Enter the Rakkasa (Drum Solo / Oriental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c89fd95258bcdd3925b701dbb6c038b492f7bb5fdb103f0ef93473997ad155. 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/QM4TW1587903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73148d370fe8a15d0dc42039a74e010ef0ac5baaa4842e7fc97baabc55540ca2. 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/QMFME1541318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1bd407718e0fc8043ffc500ca70b7dd604b7f40a4e722fcf6f458f1471ac51. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:36:07Z), 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/QMFME1541321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8790afb54375dbe1833fa107a12e0dd1ff2b8240a1a3af788ce64f461f476f42. 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/QMFME1541329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7188782af868863d717f2417eb972b41d63552da1ae677f51b36b872bd976769. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2183940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3553f9c144b5e32fa87691141c6a78ec643328f0aacc635699e0c44dfe414487. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2183942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab3aef95398dfef150a011939b676a09c6fc8a8e0952f6f0141ac3dc901886. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2183948.
Alla Kushnir presents Hawanem Al Sharq: Oriental Belly Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fadcf0081e47fb07f2ea4098ee9ba53ca1d10d266d7878b4cab46cb57c27e20. 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/QMFME2054655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0cb3d47f0314c5ff687d047e2c07b78620a35aa78679cfb561b0549a1afbee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2054661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2889d249e0a0c6a4c9cb5bbe943d8b2f26bea43dc967d1c277767886e21939cd. 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/QM7281481463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6fafa0fee59d75064af1532fdd7e24ccdaed0ccfb127b022cb4658b528021. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM7281481466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836021fad6892c90e466221ad66d13dddbdba4374dbef8963e3da4e176407e84. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R31010159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bebc49f6c349f990812e7584608cbf1b0a2f4a47f639ab80ab1bfdbd80c1be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R31010163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d466393f0a5426467b1c390b283e3782a62361a23cd306936e6f9b8547794cf. 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/US4R31010166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e66779397078d28f6ecd8a4f21b556340eda615113eec13c7164390b594646. 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/US4R31010171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3492ef7849cfb958b9e50e1df5a21cdbc2e89c2684dda9d0da2a6cd776ce4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QM4TW1592839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e3dab79b8325c9587230cc0b087266cc1883743040db31dc8ad0448eeec841. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US4R31109164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8fa7af2dfca6c0a843f20064cfd363249b860dafc627a17f166c3a426a7977. 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/US4R31109165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aebb1bf1017496337abd27f398f667b1085d449a9de4e3a9d514df55a4c7310. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:54:58Z), 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/US4R31109167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5ff26fc75934e27e19309ce0719194b71e97c35eda5ddd3e0eed8a23de38e. 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/QM7282050479.
Sadie Presents Totally Hot Oriental: Music for Bellydance Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67741e02d95013fb6823dc2e06418799ee15da0fa0e48cfea2a96656ce6447c7. 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/QMFME1583588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14690dc73a66d91b7075c4a4db62bfd9b06619acb45a8e77685bfc2f645df5ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME1583592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420f43919590fec98b19c533e31f813fa84df4409da14c99397bd3491c11c29d. 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/QM4TX1538365.
Bellydance Masterpieces: Essential Egyptian Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd36aa9d5c3b4875c477667f04649ce3c83df6128509a3b897f4b08c923602. 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/QMDA61576735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6740011fa5e67a725339c9c691a262c2b222a9ff8e48c12127a991d095fd8c79. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61576746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38350b4e050a9585a6fed2033001db8bbcb66538d187b6ac611a604ebb5fab3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R31153262.