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 0x303d1a7d301de1ace1aa87f722cd5d2bd647562e43ce7647088b702ab962b5d5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/479e0892-45b4-48d3-bd14-23077b331544.json and https://artists.proofprofile.net/proofs/artist/479e0892-45b4-48d3-bd14-23077b331544.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 0x7654e180ba2f67dc07e7179ba72abfd1166f4f106167d4f0107d4170b4e253cf. 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/QZSYP2162292.
Babel Violin Gustavo Santaolalla (REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2376d65e3e5ef3a5aa3df26ffb9ad85687786e32e66213ea00827d2f93bbab0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZQAY2275166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efba00832fdc80fda798f5f0da6d329c06ed0a1611773701d38849a3203f6a6. 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/QZS7J2234224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac9d96980dfa4f7cf75953c07d6e1416fdb8cc6f3259325ff547b3d82d3ee2. 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/QZS7J2224851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbfaae08c29490484a6fe36387f8616d020ebca1e20f81c450c7bab1f7c8a65. 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/QZQAY2370454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6bf7594c02944a66418afdc27f454d3a307f4be129d2bb226fe6959f20a8ab. 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/QZQAY2362003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea685ea70a659815e06372a52f621f354013e799da443d5fff0e70bae9d5a7b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZS7J2311908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2523c53c7eedf1dd093b4b7d31006a9fb73fdce22c33b1a66b0a1f06891508a5. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZS7J2336136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d9cdabd1e2fc827c3b0aa8d8e8d21ef8727941f234971fc9fadf2d0f32dfb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZS7J2376148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e56bf48899e126006924c11923f076f85a498a16219b31cd81caa8c1342e9d2. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZSYP2354930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ef1f219b4e221582f587443c3f2b2b865aea9a2ed27c34d8ef1a8ae10400f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:10Z), 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/QZS7J2331853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfe4289b1d81c73f7ad568fe765d465150903f85a5c9a8becb6bdfeb21713dc. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCAHW2447648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fb2dab7001ae2692d748b616b4b487444822671521b91b8e2c342e5052c9f6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:50Z), 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/TCAHX2415040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cdeb245950b6a0f67d45fb6d7ddc921ed1813b6269c7a1e2493a4e62408e25. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAHX2488741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7108ea768c79041cda43a4d4aa6ad9c2cac049d60bb06a77eea000fd3a1d08fd. 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/TCAIA2419681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57183fb8a1ce5f3d2b7c3af6d95eae0116d71c73a0f888649c215ff1dfd6a50. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIB2466165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b93e08dfadc2d00e7e19dc8e073f622cb2241c4bac2e77a9649454fded8dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIF2464712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116f3e72575b63ad380a9e0119a7e8829bf548205db4e259639b1e72191d33f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:46Z), 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/TCAIF2419881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc649e4d8e79d14f3957d37fa7e05aa47fc4328f884d47a766006cea6a98a55. 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/TCAII2422596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7441c1717a2cb78e0621fed01c96323d0e8373a6450e9894fde3634ba8abd8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAII2484543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562df64c2aa96587cb631ec850e4c4b3eba0e376de1e33f8869580b3848cae24. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/TCAIL2428440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc8b41defe59ed767b3328aa7243251b53659113312115660769bf149969404. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAIM2478585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be7f20894584e8759446ad2004b05f95eb6330df836ed8593465ad489c4602a. 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/TCAIX2479151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f153d8d2794c7403ced4ba6dd4a9f243712f5b67afb95afc7700d9b443ca4c. 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/TCAIY2484912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f20d2045dfe7ccd4f8f73c8c7ab53a89c2f2bf71349a2f4c8aa15d597e2966. 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/TCAJB2481929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccd167149891042af2e07f64784aae49aa0a96bbfb5ec7fb225388c5a422231. 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/TCAJD2455676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacaec674e24649c352e0a766bbcb00cce18218160424d0141754e244ec1801. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:19Z), 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/TCAJC2490006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c9737a4ecffa935cb0e98dab835a0fe0b45946a66ac2b979ac8f4f0393611. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJG2554715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e4647740234b10bd66e995ba12d8456538ffec09532a10de2207ea5f783d19. 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/TCAJH2565732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbd33238d8d578c89585034cd8d3f2fc9e34b8b2af2aa640591f0fba6846c0c. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/TCAJM2524201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51a3cb70d04b79701c8ee2b949be258405288486e9618bfda302dc4429acf17. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJT2575256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c38d580df56c939525066deb5a3e76523a75692ef5aca317e5c4d77f0137d2. 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/TCAJV2558311.