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 0x4a06e21f34cbbec23bc1139509300391c372f25db6ec9352f1bc5d2028b889ff. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c2c07cf-f0f2-4fde-9d81-ddf43e85429f.json and https://artists.proofprofile.net/proofs/artist/1c2c07cf-f0f2-4fde-9d81-ddf43e85429f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Imagineering Story (Original Soundtrack)
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 0xc6eb30c3827fbf2eea4fdb854607b21505b4e26ed131a69a6ccefee77b5e4d12. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USWD12096739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c8f3420efeec943046a7f6d3b4ac5eaa1efeeaa749afcbc2a6eac26e95fa27. 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/USWD12096740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61cbb67babd7a71ccdad3649f0b9bf8d5549a8ef0f225fca7fd6cc491c6ca59. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USWD12096742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170a8760cbfaccb2409f6a7438d54f8de1413e8902407f76b370ad3876990be2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USWD12096744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49894f393d2bda97fad174871827b1476d2e67760e523f444c3fa9fa5c219bb6. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USWD12096749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c802b3d4c42b6356f4f7cf9ee9e0f227ef708ff9461c82047a402e5e938d7c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USWD12096752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd377305b1d2ede248d5d83badeeadc55cda25efdcd8df91f3f0462d068f077bc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USWD12096753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e0c00b21a5f972bdd7d5d82250f50a9fe5b3790af9429964532b4f8ad78ef9. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USWD12096754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcf7c397d3960e127fd8c7b09bdcff48a10bdcda7364d82cf12282b15609f44. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USWD12096758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff337036172569789b9dc0b8b60c5c045f592cc8a911172b6653d1c40b11f3a3. 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/USWD12096760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cc9e20a4ea7d6db9e53d861b298527229b8a6e94e13c82d433e46c822106c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USWD12096763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da423c3d3ed09337db73ccc23e130c765d923d4a1a8a2a3916e807058a2ac18. 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/USWD12096769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63033a58dc92850cd886d95b131d8e7ddbfd88b4245f4214c3025b8ef4e79c7f. 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/USWD12096771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca02c1b2d3a79d690c7ace0d737582801afaec765e6deb67d0f466e443f2b1b. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/USWD12096772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e57e229e971447f868713bd1832913288ec1e606cca2ce6dfee7190f9c9bba. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USWD12096774.