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 0xbab28d1c6c8ff9483f6f864021345291139951e5b81a939af951ee111e15ef9f. 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/53a29127-d0a2-477f-845f-b1371e1a1d56.json and https://artists.proofprofile.net/proofs/artist/53a29127-d0a2-477f-845f-b1371e1a1d56.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 0xac0f4d6bee27c0c8a9d0ad9d831b4e654ecfee68f03851756607353415a113a6. 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/INS7A2565281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac6f6b15e8955b4b72fb2b68dd81db72b84f11e74870da9d07557b881038e4d. 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/INS7A2606647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f72952b7ca64834e9d12b8a686a77df67eaa90217b6d492dbcc70abfcdcbcf. 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/INT802201213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e62c41337c7038e8856a3ed7aef34ea56078f75bbdec768f3bc739509b85c1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:33:21Z), 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/INT802201272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1b4d1ad624af537fb6c2364c9ceb33645e713eb47a5eb902a9bd5fe1708946. 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/INN632400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9d4a766d4229596b5f034d0d67fe5b6bf688818423600d7ac2604e5f13b1d. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/INS7A2632558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefb8dc3e1766c8e3f8cca66f1b043ed590425ca2328daee7f8bc7d59751158f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/INT802201417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf05bcca08b6ecf1b08173539dbad89a50192cce97104db2f40ce2054023d6f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:51Z), 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/DGA072408249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd079ee037b0755bf76edc2bd8fea5a5b0d9a4354e02ad17c505905c977de7b1. 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/QMBZ92444006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2c08e0a02889ea99e7425b6f0e2b9b87dd453867e195ed52c0115f6b694ec7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/INN242430033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37d2cc0dd9c539cd7680ae71cd592d8784097e3516c75f9b8e1b34eb2e33e2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:58Z), 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/INN632401260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae6394efc83e568f57d302585f00a71e6ce02e1befef78e9c33468a018836e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ING212412370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0d86cf4f135a4b5b165ce7bb766bf64ea70a774646d4f97933d6b4eb7edb21. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INT802201887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0c491ec69175d22288b325957e61b6e829653d6a8f0a570c8ac8f2e26358e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INE182566694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8b50836071207f47f5ba253b1a3ae6258328349d6cb847ffe18b5e0de8f61. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INT802201913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2026e44a099692c15fef47f9098de475b980023a807c8eca44795170735b6888. 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/INE182567907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbbb7bb6f844f6caadf0fee777fa1b062a16250464727eda3c18f85459989c3. 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/INT802202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3abd79b9f114a084c2940f7a5dfd622719d80559bb67dfd87e7bf7813bedba3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:42Z), 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/INE182570766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a06848ac22be546cc10a017d20d3c657d15aba0e970f538a0e99b5bba148b2d. 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/INDF22500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd8cde6a4c3d58b864b72bd60321e866de72dc2a634afc975da27cf2190b76. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INV862510801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf699fe1fb8e44a64c15268e021a61bd7d369b3bbd3beb88801dbb418dc05d6f4. 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/INT802202186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976e430b5657e21b6e6d3102bc22bfc15ef55f3fcf4d8f1e069a3896413b4bd2. 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/INR822440039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23a2d44490d7132168a3417224836adabc91164054a88af1458c9c47e857000. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/INN632500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f62ca12c5fe8dc217ba7e5682ecc789f3075a676381234576af6531da6461e. 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/INE182576987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d02282da5fd64ccec93eb749a02906eedbbcb5a07097918882a12c8c384c841. 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/INE182581284.