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 0x069907e6d3d4b1c7cc31fdb577b21c1612a13448623321f1f1055355a4bc293e. 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/41a2ac63-b98e-48df-9081-b610b5d59a32.json and https://artists.proofprofile.net/proofs/artist/41a2ac63-b98e-48df-9081-b610b5d59a32.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 0x2af923e4d0dd8422d20ca2b344ce0136bf5366c4c8a19f32573c075dcaad7e9e. 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/NL28J1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef97cbd9c2a4d59ea4c8b4608ae0243faa386ee5076f919d49dbd1a9026b20. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NL28J1500001.
Come on It's Christmas Time (Radio Edit)
Come On It's Christmas Time (Acoustic Version)
Come on It's Christmas Time (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25679ddf868fd75c82f4315be7068f51704d2adc4b42c699e29bf78fec344f63. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NL28J1500003.
Come On It's Christmas Time (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b19dc31818007f0137e39430e6c838aa465f1aa81f8fa76ed7093832260e6cf. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/NL28J1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a01334da2f719708c26f8c818dde974c410f352e33473f975e4218a7dc381c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NL28J1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc8fe907dc682190dd5f4c9ed7001736447f86206a4957dfb3d73b591e2a3a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/NL28J1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3237b927fe669ddd7097f7b3381b1adb39a8b2475e12a221fd85e82069c8787f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NL28J1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcdf7bdd5d42678108c4157a97da2e69fd9857037a608c38ff4b08c0870b4e2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL28J1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a2a2fc9e1095d2139c8768dbe8f44ba557eee641bcecfa94923c0c66e54e92. 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/NL28J1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8ff42d79d66b1852a46eeb2cdcbec106180b6a50f48725161b9ae5550d73e. 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/NLSU31900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbef5206a2d1147f5b6eb983928aacf71d506d80dc6cae555736d89215a40cfa. 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/NLSU31900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3120e6424bcd53bcdad022bcf4133f74eebe351fbb657ddd3427886de5e30183. 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/NLSU31900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8c293903d16f528ef906053f36186be45ac885a84e9be6368f587cc54a695. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/NLD442100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9534a79d9162fa6b03fdeea36edc9d1a5aff9a8fd9f86a35dc923b289a6daabf. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NLD442000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4de2979016e9b340acae1f3f91a45bd184d6bdcc43f06cee298d2821794e64. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTB42284139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290c149bd772ec4ecbd148c5bd9bad7b59f7b711ca16aa709517f0dafac8608a. 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/NLP972300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb233817df91435f2b13ea17a0a161e5da908953f6ce571aef01ec6830fdbcdde. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/NLRD52222508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac87afda741ce7c442befbc524c248879e3d57c3d6633487d5b464b95a23e908. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/NLS052500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84d6582257bcd33fca1d0fb971c775438c0b7d35fc6aaf6e76077227516557. 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/NLS052500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c0193b5d8618b38841077b75dd95824f4cd64d3e143f1f025699853a829b4c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLSU31900042.