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 0x4020c8db840348e40a6f113a61e3e204434634b44aae63088e0e0e0be7f94b5b. 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/2d858ccf-3a7a-4d48-a5f3-d2cabcfb286c.json and https://artists.proofprofile.net/proofs/artist/2d858ccf-3a7a-4d48-a5f3-d2cabcfb286c.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 0x42e7676b6ecf3a16719c3336d2ff9d3424b717f6f5b6fa1149fc88ad4a7e60c9. 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/DEZB52010111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e2f2791f575ea01e1cb4e11dab5362021426b366c78af6602b4fc52f3f5fb6. 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/DEZB52010112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1926603597b52ba716b3c9c89b184366b172d1e548d3bdf42dc7c7e8d33141. 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/DEZB52010114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a62b20c0331fe8698b7e6c9e3feab5686772c11afb8ceb4215d1e5cf7c05f8f. 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/DEZB52010117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4966435188283aa22c2383ee4d435867eede23a0919be1e64c2dfa921bbc4dd5. 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/DEZB52010118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fbadbe09483e27a7b07c87ad053ac9c533ae6e230030775ecca158a3380ac8. 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/DEZB52010120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e8e24c3841da06455162644f9c7931653305113b4bd72a5f24e4999da6841. 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/DEZB52010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd2d604d5a8b4e7ffb057708e11224c33d63f492c38ba88a212f27240e37f4. 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/DEZB52010136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9b7a198df281e9b913bc6474761dc34981876476df9bc30e11a4c77acdc8d4. 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/DEZB52010137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c5d3dcd9b87051ec62267827114448e6637f5aeac47371ecc6f98af012dce8. 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/DEZB52010138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa933315a10f87b685070abd5db60a620274cade7b51ddaa77d034854755a53d5. 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/DEZB52010139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef701d8bf9687ab4e91e13e62d99738f537858ec158b8b069a176b6fd84f59ee. 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/DEZB52010285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65785bbfaa735dfd489496040bec72cc193d987fe0be62e44a06ec2b0bb8bdd8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEZB52010287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1735027ba28d341e253816fd18d120da515a956ce657568a811b7a57cd0adc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZB52010289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd5de1564a6e8db65e64889bfc7872e8047cc0dd7c715c91bf8e12fac71f95. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEZB52010372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a7a1aedc89ca6ca3a340feb3ed915923441061d95b85605c283a3ed0a3811. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEZB52010521.
Peaceful Lullabies (White Noise Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d439c7fac91dbe1a9690db66a61b990ea1259153294ececdce50afe0ee6ee6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEZB52310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7252a941b8e4e65259beb64fca781480dde49d25a0d20cd1a3cee9ce12cc1c2a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZB52310005.
Peaceful Piano Lullabies (White Noise Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd576ea413da11898ead047b590b7adaeeb133dca87cf58b02fad3130d14241bb. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/DEZB52310038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b45fb37e25d34cc67655a830c604f35ad2518a07720cf1f187bff4e0d78bc. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DEZB52310040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffb5218f35f0ec26dcc1f37541832758664e5985997654ebbcff4e20139643e. 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/DEZB52010141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11e5dd7453a06533be0e2cfa0c416a318bcf6befb8fa6ca27d43ba360d8f7bd. 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/DEZB52010142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9f301da0e7ca826754ff55f868c27a9c8afe70dacf5dbd0956058a3cff9eb4. 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/DEZB52010143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a7619a7a965636fff8bb3e82a01c1c8056ce0aa1997d1af9516299d0ea1197. 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/DEZB52010146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba613c08622c0f04a3ec3209bd3bcfc3c758f795188339a5360827aeaf64828c. 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/DEZB52010147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a826b2b9b3726047785f7d6961390d14fcc278ca63d013eb00e9b62ddcf4a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEZB52010149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b0aff596d87d1cd4d560b67083382ab9af078e162acbb8528275ff25e4453. 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/DEZB52010150.