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 0x14ae0182b956b35eec2bbb5b7b3eed674c4a0ec488e7008961203213a4418856. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/501e207a-53ae-469f-a648-8b581464b49d.json and https://artists.proofprofile.net/proofs/artist/501e207a-53ae-469f-a648-8b581464b49d.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 0x2b72d4a28dcdef212ea0a613e7a9e919675223642f1d1a0daae14bd8bd76b901. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:23Z), 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/GXHG92504736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcf6fdd42e306da45696354800b4cac05236fb1f3ff7d75347c9c3fd35e988f. 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/GXHG92557492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec27c058f0049129996e61261420af1b4584e924375c20a72c363e83ade5847f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHG92557494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7dcb1d6cd174ec393dd51d9a2a32eb15236b176247ce30403b28352e11f7ef. 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/GXHG92557498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ee9bf7f755ab10724ac3aa5f687e6aca36473293872eb892ce273319845a0f. 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/GXHG92557501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79b0e2744a4381bb4b10b9dd48adbf73ea2d13c95737271afb14db27a2c6063. 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/GXHG92557502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb242b0a22fef2d649b423985d7ada1119b299d82ba418ce54a9e37bd6855415d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:24Z), 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/GXHG92557503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a527fdceb0afaa46be28c5f33853b06f18f1b70861c241c86ae2356b23de82e. 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/GXHG92557504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa446114a1a28416762ed0998d001b7203ef10f81a5378e5a08f411f9e008c212. 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/GXHG92557505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c952a613ba8fe36bd3ee47e1af65b6fc23b70f62f3dd17a73565424d9f532b8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHG92557507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e28e23bbb682ab0af8439f39f7d9e546a059e4ecf2f0978934e46028d1d88d7. 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/GXHG92557509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07c8279661a9547f75e61b578b87fd7e32cf0e807b7c4d45763bca953481874. 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/GXHG92557510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cc304fa679011c9e01b0be2e309ae0d73f795e1c3048b275c8d445d8999c4a. 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/GXHG92557511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c2d0f65ff7abbc25472e72325e9fe23da1847874fa697b9bb5604180278a5. 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/GXHG92557512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc83d6a523cf0dc80d1ca069c9d61a7f7a02477261d58898cd216fa8c7469756. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:37Z), 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/GXHG92557516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c391506e1bfffe0e976b18e53a7976fc962f64981c1a4376f41001d52229e78. 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/GXHG92557517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf9e905fb37603cbf1d2f41d1d014f36e5e9a5ee1fec3490802d90732fd0d46. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GXHG92557519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d8fd2c9de698abaa1c370533261e7072d1de09c8aba245681cc8b86d41fe49. 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/GXHG92557520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a257b86cde8ce7298f44aee347e0bc1d8904feac5c71ebc305b00a58bc66a2. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GXHG92557521.