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 0x0e71d30ec2113e1a15da97160ad5d480e17cced0bdb837fcfbb3392af230e04b. 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/29927e05-aa08-46db-bdd2-802ed9d2912c.json and https://artists.proofprofile.net/proofs/artist/29927e05-aa08-46db-bdd2-802ed9d2912c.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 0xbb0dc8035ead01d0941e1163deea8a34f4bde909f3d846ffc40daedb59cc710f. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/NOPRR1708030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef73b4627cad908c09ff318a9672aeac05c4c9e5ac4af4d4de2ce4c1f94dbc08. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NO7MM2401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219e7a19f5c58b54f62165e8510145a5ccfff8ff0f793d4fe546d5933bdb63f5. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/NO7MM2401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e1780ffc39ad44f9de9b922a6ac066d7c475a896406f3aabd34c86505b83df. 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/NO7MM2401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d879ec3767ee502e476afc99223d6564e751dda2b01745c6d2611bfe27a8e2. 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/NO7MM2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c5d25e4a3a5b2580a7bb8222165e90e7da890723bc4f4514432cb2f48cdae. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/NO7MM2401080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4180af4632c3cd7d67c97a6d3edf357b7361b9b304e3951e93b7caf33b086cc0. 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/NO7MM2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ec664cd035a0a70cd4bdcfdecc7cc7bb455540a83a8c4a27ecc0bed21333e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/NO7MM2401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d879ec3767ee502e476afc99223d6564e751dda2b01745c6d2611bfe27a8e2. 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/NO7MM2401070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776109aafea10e82e5d0ce37d4fb82f90f569e7abd2b1b6fa7ebfb1e9023e284. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOEIA2028070.
Folk og Røvere i Kardemomme By - Sangene fra filmen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc101a4bcc6cc2beb32c051d987291318eda8dce33621781fe1b1dd528c602b4b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOHMA2230020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e93c85291e7adeac492ee2642742f225ce2b07ea3cfefe02344c3bac6672d07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOHMA2230050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4758fadfb9b03f53ba3b458578f85d89284530da1a5f65727db526eac82562b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOHMA2230210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77294b7c3a71dc3e3a068a4c0084f8b0d2b89a652ca97d17d6c90ca93e46125. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOHMA2230300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e805e235c419233fdbfc870074bdeb5d195c983d0753366478d7cbf11d59a5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NOHMA1803030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befa29566fa7855058049d5dd10f25dcf174b6e75808258fc127e4629f74de2. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/NOHMA2230070.
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 0x407cd6a6fc500d5991186d4a7d180aa6cc9f00a8c4aab6a766ea8e7a30fea0c9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NOHMA2230120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f149e05b4ef1dc440f8581115c5c3df8607a2d4e91eee98b41726f44f879e4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOHMA2230130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb811bcce2010ef59fc10468481dd9bb2017247463b28ed99c1b2d8ff35b31553. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/NOHMA2230160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c9740019a35bdb6e911ffc58f74273895da0de31042850960ae931b2bc2ecc. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/NOHMA2230010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0d28bfa5ac577fac3de94016810073b36c01ca1ad28918671e0181be865d4. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NOHMA2230240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fbcb40db754dcca6a2e27fe8fc91e51519f9d2e978035e45817ced99060b91. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NOHMA2230260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb10c620b2b2e9647cb2ece81fcb716f4d901567162b227cebd0534c7c38f86e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NOHMA2230280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55edbe166844442d3279dbf4edbd7c31d97053a118646df5c40c7becae452117. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NOHMA2230320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e483d9e5f5e5bf04cd3ecb31c34ce01726b9fc0e3ec093d359c2db3b272098. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOHMA2230340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b45b17a30988dc780640e28d308651a15a74440bd212b2a178a68f90b2c8666. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOHMA2230360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07da833291ac338cf06ff7aef3baa3d11b35ddd1b7bed4091ee5463f5aad9b7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NOHMA2230400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91f2e81c80551ec5771fb8715e207eaca344f8ebf7f91a3b48d887d856a3da5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NOHMA2230430.