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 0xcff8714a9c1de958a8fae66f8e09a59d43b57fb512abbdeb5d65598b5e340153. 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/e0ad8963-2aff-48ec-88d8-d57f48f84d3e.json and https://artists.proofprofile.net/proofs/artist/e0ad8963-2aff-48ec-88d8-d57f48f84d3e.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 0x67d663f5a60cbca81dad5b76cc6bae45af6971370235a97d7ff7636f5878f0eb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CHUM72000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911650bebec68ae8c878ca25de16e055477ba524a08a005477bf84d7e43216dc. 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/CHUM72000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0794695e340ae0b06586863b522f8c8fdb5f8715ef693bd4ef3f65641503e58. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:21Z), 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/CHUM72000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5870d589900b6393711b2d610784a3c783dfd910e7b2eaccbe9960cf260e11. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CHUM72000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119c2960c489c42c44b7bd6e9d00a705980599a27ed629dda49cadfe4fcfc9e3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CHUM72000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5bb1a01d02a9a174c0e3f04a3718cd19f8fb91efd5a01ed5e4dfea261815b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:10:52Z), 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/CHUM72000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66629057adc3431a33aaf9fc85aee6f0e54b17d61ef0e803b37a16c714190de7. 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/CHUM72200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf67c065e74dd2d0507dd25579a07636d24537af6d5ea7794b763f53bc4a7f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CHUM72200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307895530e0871a736a5c6f8cbbee312cff5c6076f04f29976d58d050b4e36f7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:57Z), 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/CHUM72200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fe4bf0ba82121156352c8e64365186966d6d4cdeaf44285483b6d3885e67d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:55Z), 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/CHUM72200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcccfc2c69ce159bd9455fe00e32052b3945e4bbedfe1a8aac845596991fb647. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:09:06Z), 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/CHUM72200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c6e03210966a6a74c7d002e8cdf6caf31dd5a65dad1015cf98a753be808791. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:34Z), 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/CHUM72200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c49cdb3398f9e135f00d9140b5a0e59331c3e1d67043fcc4742849c3528652. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:09:03Z), 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/CHUM72300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf1d95c1a337b497f1a892a323db57d9eae5739ceeeabb1a7aa6c5557350b1b. 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/CHUM72300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa208810eb6be501d53a8fd0270cf2cf48cdc6d5bb21fc6369ea632babf6ad7c2. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/CHUM72300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c49cdb3398f9e135f00d9140b5a0e59331c3e1d67043fcc4742849c3528652. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CHUM72300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da20b9ae9a8e5b15b454423a0082afcdeea407eda3b13d089d69c9b53b70c7. 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/CHUM72300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651eb765a591f543173a3630403db5af93d57be6531fd8596e8ec7e9cd77720. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CHUM72300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a05b568b49771ed1247ac6ce5e586edd5b191d3f0fc193dd1ea454f101e7084. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/CHUM72300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8a3565f202e219058df22c29e2e434d51e8a6b98e0840164cee18e8d983bea. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CHUM72300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10099b98cb58f3342ff1fc7c9452657441c128a8680f0153b6fbf02c0fc1e5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:32Z), 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/CHUM72300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077297afe770bbece4f8b013eec93e3965ba11f3ad360863d253a166dc58c801. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CHUM72300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83389b51b971b55c4c485b2c1b0a36d0779376a89fbb565cae06c80de27e31. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/CH6542399890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77f1d882e4c31fd67bd5a36ab40043edd5f6f67512988f4c93b813db49ac6fa. 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/CH6542399891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f9174eaf9746950b0ee21edc582b2e3f5001829692a731e44a5c846175e47c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:48Z), 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/CH6542399892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb3efaa2cd965355a7bed21483bc6625baaddeedf8bf1ef3245f73b2319d5af. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/CH6542399893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d324105058455b8db88dd134a30480abca033533282edd4369cee1c383fe891. 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/CH6542399894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85faa7377749f382d85a7c982d7cafe3ea3153aabcc90e2474345fd56f3fd1b7. 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/CH6542399895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47f307b63c84eb31ba71b3663794bf346edcffc3971320915bf9eeaa74cfc9d. 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/CH6542399896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc7c2fe66171c5228f6fbcff34cce6bad09820fcad7d6e5739ffe5262bcbc83. 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/CH6542399897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa50882302966e9511b0668530c2593198009445bff3f573ba31aef8d335824a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CH6542399898.