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 0x36f1e2bfbe031f13f0212f932992cc2d77940c0d3834c0dccbbb4bb1590c312e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb55b558-bbc0-469c-a9cb-891550f4e490.json and https://artists.proofprofile.net/proofs/artist/eb55b558-bbc0-469c-a9cb-891550f4e490.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 0xcaf3972108105aea0797a6b64284a9257c5c9ebd7c62fd43702892a557c5e85a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:56Z), 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/QM4TW2240244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef399b12ee7680b6f6036831a1ca19d699221930530359baa6551ea3fa86ed. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM4TW2240245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331458b81db30b3c203ec102d05b4ad60c79458efebbe63f61b8d16138752e57. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM4TW2258200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b43b46335d44fa5502f1f7a078f53e0349d4d9d67bc437d74e3e5c9590aed5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:07:58Z), 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/QMDA72263517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4d065221dc6d6c64e2509763489af3f6f4fbe1165ed7157253f5fa3b116a6c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:11Z), 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/QMDA72259170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166afa4c8c75c5d9873061f2edb2a572a519e023077ca2d0d8176472f88d4cb. 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/QMDA72259169.
Mujer De Todos, Mujer De Nadie (Live Session 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9259e44a01c6c979d4314a362f473f39a0f1342a25a50a163286373bf66a7589. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:50Z), 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/QZDQH2358450.
El Precio De La Soledad (Live Session 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07e30d6b1df8bef695ee882f5cf4c74526d84cc311298de244175ed9fba68f5. 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/QZDQH2358451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435137d4dda5929844e41c386ec3faf91b702294c2968f3254c707c083b1279e. 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/QM4TX2377571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4a68be40d510aada5c4e7202df91c1fdc32419ab5eff2b0211feb1b0f485cc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:30Z), 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/QM4TX2374306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf833b409a14f32008977de36df873fd8f189809a2e3641f5deec4f7595101f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:09Z), 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/QM4TX2378385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce3e62b0964fd9234d12471c0d64347be6f5cc2757438be3df8921ff6900f5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:32:21Z), 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/QM4TX2374201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bc6169f43b933beb1c33e2aec3c2126777d42a9c82432407c47c44404d161d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:00:03Z), 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/QM6P42374854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589344f88a73111861d0b0db7a96e2bc7befc3cb3a3572c04aedb0c844084ce9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:09Z), 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/QM6P42369709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69feb76a385e1c8e1a2db263b05ed1f43010bd6b53aae0a6578c46438eafc4fe. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:50:48Z), 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/QM7282369447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6fa45a8506e7e52de8cc3845ff06294d6ffd131bc3e42aef507c2ab7d16b60. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM7282384616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4552cae6b003d26e93a8104961e45044bb28415ddf11dbfb91e40511aa15428. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:34:39Z), 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/QM6P42374882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd15d374b9a82d64d11a9bfc0d0c64ee0c7b60ccf7c1ca6348bef6f202d85ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6P42374959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cd14beb18571414d0891ee5c4f7b370ef0065eedcadd1d957dd405f69ec2ea. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:57:58Z), 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/QM7282310805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f773ce4eba916413991a9ae6487e57e6028f5975cabb3b9fb9551a52b4cf0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QM7282369423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842d725b411c616766657443226f53ced3ca7d4eb472ebf800baa2a94a7d018a. 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/QMFMG2375357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670ed4a23777bc026803d62726260148b2e471d2161bf519d911ac92b45165c5. 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/QZDQH2410142.