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 0x47ec16c6ca8e607f8ab37c8e0129120dd19c358f99c602ac6cbf2d19dfd460c3. 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/2e4741f3-ef87-4c51-9c72-7d6764468f7f.json and https://artists.proofprofile.net/proofs/artist/2e4741f3-ef87-4c51-9c72-7d6764468f7f.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 0x0d468aeab7561b8ea7329a96f5856036d3767cb1e15edf69d0b104ca52a18f29. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWV2162121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3ae426d52f995f2a667cb33744107512f7b145927c4a4c54b505c78c29ce32. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6K2227367.
Palomitas de Maíz Cumbia Sonidera/Sonido Pirata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290feaebe8f2b4dcaff294b6a1d309d8e56124545f96e5f247fa2fbbf44167cb. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ES31E2403205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb060b59b1607d75b7345abebd0f64881cffcd1743f8cbd3fc9e3656f5405ae5d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGLS2370657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ec7937742fdf34d5a13ac8879e98d1b915fd589a3309db615e1579d6bdb5b. 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/QZGLS2370652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8e4b58b385d993883370ad5b1ed55831e25b9d27c6b106bf077e86ddbe396. 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/QZGLS2370656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b170cb9ae8356263d1bd9072bb6358add54a2859ddb34ba179c7b6eb083141a. 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/QZGLS2370661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3282811f09596010e0540d536f8e8d3ad7dda56f8769d3de39b5b09e27f29feb. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZGLS2370663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60d9b7e381cf2932eaa6b793cfc9d3b03c1bfab2cc4bf0b95db5a5cb97f604b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:42Z), 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/QZGLS2370668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f74b33476d049d6679f480cc613b22db6e0dd17d3f3101623447efd504900. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USL4Q2537023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c304a2336c347af345008aa6806fe8bec3052aa4374e2b5eed8ebc973f13b. 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/USL4Q2537024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc28e482ce5f33ec214de0c731f5172efec1f187f71a19455b39b6d4061d826a. 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/USL4Q2537025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e1f3e1715508cf278f0015a578fb2a605b87bf0646153dd58609f098eab55f. 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/USL4Q2537027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12359827713ffefbf06f9378337e2dc2c45e35d0b2325f346232d8f74942a523. 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/USL4Q2537029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6800dd2731d01ceb2a171d8411f3cd11107ab491584b09772b287935f57e87df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USL4Q2537032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d6cf0a7c462aa7af704cecd22b341e561e4265cf82b58f75e3f9779dacd95. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:33:37Z), 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/USL4Q2537033.