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 0x92018d0b0058f9c9864a0a162a6b3b00448fccc4abde20931c5d1f1a4d54af64. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c9df50e-6f8d-4e58-bd69-c6d99c4454b9.json and https://artists.proofprofile.net/proofs/artist/3c9df50e-6f8d-4e58-bd69-c6d99c4454b9.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 0xc430a964c1a4e464ec1de8889f0c8df590e8cf5848acb90efd74fcb2e7fd4382. 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/CAB2K1600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cf73d823a92932c72cb4c6895339369e46803671b84ab9039188e37f1dd5d8. 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/CAB2K1600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec9bbf27b5ff9d10344e70bbe21b7746aea9370f5b78069611a9cbc4e4bf5f4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAB2K1600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddd6197b2a6a1469d18ecd507ca6969e6df3c4618388749ff35214aca3c28bc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CAB2K1600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d6c1c507cf96d17c20e9c23c08cc214deca80901315f47608ca7bb45e8860. 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/CAB2K1600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91c61da9b50564896f6d16f90bb227196d7889e2a94a1117343d9c2e2dfb2d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CAB2K1600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba645eff608468a551c83a7d8ca662826c8b2ae59362c991bb0dad663b50883. 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/CAB2K1600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b9aa9feb2344ed2f32c2c8845d51d5c156c1d6b77dc85298efa0516f089228. 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/CAB2K1600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb037378551bf984114df45da5cbd8b8c93171902eca1e6a3beaae4e88b10d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CAB2K1600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c242555642b8a3362fb0a1507184f6f7a0a2c30db74f9577609a4598290f66. 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/CAB2K1600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc2140e7861665547bdc1086cc1e74e00021b53eedb92134701ef84e8601698. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/CAB2K1600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d92d1117964f4fda7d0a00cee321a657b10f7499a119dae7735b9995155e18. 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/CAB2K1600312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d2486a8c99be3c4e2b3b06bd71bb16273e11f1c8e657982622c3ce4c6a1b71. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CAB2K1600313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83dc082d1f3d0408ff8396aa54a3afff237753682304d652833309684294ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CAB2K1600314.
If Drinking Don't Kill Me (Her Memory Will)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b669af72e8ba979ea849e239e15f5170966ab55b648fea2ce9525d706b8176. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CAB2K1600315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f9943533cedb4c8f2bfe08cdba4d6da40884fa34b6d9943497e44ddea2f3b6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CAB2K1300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931c9fca1d928d9984396a9a37ee8334222d07a892eb79eab57250e57b3f3326. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CAB2K1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5089a597d24bb0eb65626bfaf29b4ef5308d483a8a52050b1f6452ca5c994e2. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/CAB2K1300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c64dd1899b05ec52cdb7b67e83a97e332d44a1124d8a8f30523751b6520b61. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CAB2K1300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078fecbe702f73a6b1384c11adc770c46dc110f15574dba62dc2bc21a2502251. 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/CAB2K1300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eab76a0f6fca8af74194f2eb7d54eee08df42926046c1699afb11dd7a32373. 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/CAB2K1300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53668176aecc537691be447847561a939e9ed76e94a079a936f03ee4847d2615. 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/CAB2K1300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2badd9a69be3b3a66de8b1d762fe0e52d1509be5e74d056202f52fce2d2fe105. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CAB2K1300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b2f16af3933dfa304d9ddbe9b8bb33fe25f66e22e6f0c87acc636f39509e6c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CAB2K1300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6d9e9ac9a42e3cd2f3ba6ed18db47f386e68bfd350037f1a5ca609d8439b20. 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/CAB2K1300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aef712402d38afbaac4d3c1eb209f201259d90f5d6ce26135a174e2d6b7692. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/CAB2K1300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dd1ec2ee3c49d9390629fe4cfafc2d8e31b77c358087b9570747ea14f89523. 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/CAB2K1300035.