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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed178334a4cfecec645090ec73d79597d46e756e536183e79a0f1505952de4f. 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/cd506a56-9c5a-4075-8fed-fa2a3fc57542.json and https://artists.proofprofile.net/proofs/artist/cd506a56-9c5a-4075-8fed-fa2a3fc57542.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae561e8dd65566b3d5835118c9856740c91e5bd7f7b9924f6f80380fb7a87fc. 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/ITG271800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad025b989777c148d04f0ba711a3c2277586d97609d6a0a5ba426b652115e14. 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/ITG271800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e79c84ba3e20b829b6e52fa4e75c56b698ebbdff8a14cc8841c43a3109fda0. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/ITG271800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a09916e862f936648736c9a3f2f84a80d0792c3e088d6b981cafaca98a1a6b1. 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/ITG271800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31328bdc3212849ecb6c22508f9ff9519000e0c415a2645975e39e384116667. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITG271800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3932ffffc52daa2eb336b42433310163839d4e324f3754d535a6f451407eb4e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:35:32Z), 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/ITG271900953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8332e4a75a7595860c85d4a252ae5830f3fa658f4107049b56f48e90dbbc34. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITG271900951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c7154ab85e37877df2b2471924726dabc2d81da8d18d3f5de2613e38ba07c9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITG272000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e199722f728321d98d33cd60ec577e85732048d329c7c24393a708ee224a6d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITG272000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb239b48df8ba1956d6db888f68c5130c3696fe4d2b3240871c331fb0010d8f6. 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/ITG272000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3979e5c99e5be04e9b5ceb96c7364164ba7b65e7692db839c651620633a2ee7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:46:46Z), 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/ITG272000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2138f9f062b7868063712e5affa9df9d39dcbed1ec986d4363cc08b9894f5452. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITG272000467.
Don't Leave Me Here Alone (Acoustic Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa0aedeaf31c3808443b0e59e5f3cbef91b59a2a319e88dad90f242a1a56793. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:28:49Z), 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/ITG272201139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70b939c1922b21833aa870a4787d9cc13e4d260de82d85705d48b88c66a1e49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITG272201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8adaa28efdcf01feeaa9990a9ada6161cb43440aefafc46931626e26143503. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITG272201141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae532a52c6e0c3131bcad98f55e805b9e4f83f2e4bc480a1e834e8b1cb696f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITG272201142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebbb03a92c30ed2e3873d8f555447a07fa96e2a1fe2dc807a4444d331bc5120. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITG272201144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385983e6997cc2c6a359a3cc0b300aa6516667d852076f633d69f1b6bba187e8. 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/ITG272201148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02aa3690fcd8b1567b7222f97e45a2e29cb0081678913773b637a2753f006b5. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/ITG272500176.