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 0xeda749f4589dcd2c193fdf57d9b596d6ecf746e263ceea2ebe1930b23c21b106. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40d065e9-82d1-4cdd-81ca-fa72da87447f.json and https://artists.proofprofile.net/proofs/artist/40d065e9-82d1-4cdd-81ca-fa72da87447f.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 0x765fb920991148c2aaa0bda2792c155077af36ed8439f4b83abcf2a3c09d078a. 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/QZTBD2341948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5a3ac07cfb210edde6e73e7a745335cd76b001304ee0368af4e4e4a531dd19. 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/QZTBD2341949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e367e72c456662abf35480770cbe1dd5dcacab0b37ffe1857a95296040d57a5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBD2341950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cfe6877fc173500bd4f0c6b231edceace811d9610cc339c627ad4240b0d937. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:47Z), 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/QZTBD2341952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b12197d086b264dcb48db86c69091ac7f0a6a253ed5ad3227ac9f08ab4b36ba. 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/QZTBD2341953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57289fb022c4657e2243ebc41885e7e1824d4d24723949a892bb7427c12538c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTAU2372755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6159eb0e5c4ed1ea105ae1a4babbf60df9c5cb258fe5ba837361880765a58e83. 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/QZTAU2372757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb8b6729a7f5272028fec0d723cb7806141f9239576d4190eaed8bba6c25ced. 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/QZTAU2372760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9301e6ef1281982f200c73f8ddf079217bc64d2a9c0230a0b5a4ddc893fa967. 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/QZFZ72455438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915ccca317bfcd115be26c8a5ab044e9b616d72573f278adfaf5b65e5f68ff0b. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZFZ72455439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9020170dda549691a4a5f0b5de94fd2f8f534092538c8578e8d6783c536136ac. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:51Z), 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/QZFZ72455441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72387f5a4d84b27bee37c323978bc6e2dc5b29241c4c1881ace56371860a214. 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/QZFZ72455442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf259184a6609128a7aa20396c4846569f84c450840435347dbae8904524ac50f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ72455443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5ba50ca49ff4a2474a608aec3f31b32f7c410e341abe3e22ad89b18f7f2ac9. 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/QZFZ72455444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a60d4397e0b4361ca8498572e4705c452638efa8eab6ffbfaeecdd6b3ade6. 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/QZK6Q2464235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86521286740c25904b9ed6bae39da463206ffd0968e113ab4959c54d293e798a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWS2432097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691ca819ca9500100836491d43f55e49170127e17fad921a69970c68fad0159. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTB62410283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1652961ea7144126b795794cbde207699b1b138df99c640f2cf9ce69b4b515a. 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/QZWFQ2479673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10a2dc65fbb10aeb34ec77977bb34a065bddb122f3b00f872be494728e3f254. 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/QZWFX2486552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb336c9b56733b3c57d3bdc577bca21a92448dc309881a3c4d755608db71bf09a. 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/QZWFX2486554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191c272fdae27c4b725ab123f7e247cd16ff16d2b268df992dd18fd2abea8522. 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/QT3EY2458410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53c025311ab2bc364a1127cfcbd4615498961641cfe68c579eacb0b8b4b481. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:04Z), 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/QZDA52588257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e25055e43611c91031686efb3a8a0ea916619d9e94ac9e1a940b43afbf479b. 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/QZDA52588258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93719dc5b1de78ab23defcef53962dccb910211d5fcf845a905f45673fd035ed. 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/QZHN62517950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe4326d7a5850494e108bc884b36a07985a9067b2069746a782836766f4d9b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHN62517952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3007aa646cc5443ecf531a1feb426bf8bdbe0a63d006ea01f84bd749af23c. 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/QZK6H2521176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe73187b8c3c286f591487a8bf932d9e128d6ab0a89aed646108fd310745dde5. 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/QZK6H2521177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4631984eaef6ecb3d7837e5dbfbc595b7dfb111b2f2b61481f28d5e0ad5d399. 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/QZNWY2504055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3068896ba3d8694245521860044c1f4b1f4e1125d53ca24eedbcaf0706d696. 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/QZNWY2504056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a76a012d353ca34b165124f8c8fbabfbdea94bd852fb3fe674661a4d0ddcb7. 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/QZNWY2504057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b531c0fb1969aeb66d2421d685e81b9ce38d04556ec2372e724d66c6cb57e8. 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/QZWFF2554487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e3f011b4e73666e32455a48028cbe197c1429ba13ed2fe011da036c92b689. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFF2554488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fb853418e4e757b00acb7ef3e48cddd5b026774406fa3ed54c3efed6075272. 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/QZZ7L2566551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc838cae674c40e66b81e6dfa004efaef2f0eb52bb2358f74cee0d83d3feeffee. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7L2566552.