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 0xb6ab4d2e7b9f599027c7d6d997a293abb30cc79dada5e70360a2733d9e43d0d1. 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/68113272-5ec2-4a47-bbf6-c717837fd278.json and https://artists.proofprofile.net/proofs/artist/68113272-5ec2-4a47-bbf6-c717837fd278.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 0xb27c7fa5ede18e1c196e233307841df140232244357b2006cf35f6e323f09237. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:29Z), 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/FR2X41813896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9135c9cec503696204f2e9b397c9befb85a32334f5fbb934f1c2c95bb16f73. 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/FR2X41813898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf620c41e81cd43ed0ce1f9a81fc26ad5645e51daee7be48c4a22311211fadee. 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/FR96X1818495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc437e491f5ab3af5867d6b617c499b4e40fab78df00255f34da715174894e6. 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/FR96X1818496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec438ce6e11d3e6b18fdfab03bc5e31f7657a9298bc10616d29dd16037103c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X1818497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f8bde20d268e4952c9bc3fee66809998a86012ea63f3ad57f3f96a3a5a2e4. 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/FR96X1818498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48417bd70d4765442337f2a618d42c2ab9c3fc19e0aa8cc540226344ec6870a1. 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/FRX282098204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e60861d52c82a0afbea28adb1dff180c9a038694518d02f312a9984f068ad4. 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/FRX282098206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12932a457a4173334e6f88d3e2ec104e3d418509c82f5e3f1c4a474ff79103ce. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:43Z), 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/FRX282098212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe5eb5f97fd165fef990e38bff04680590076cd4487ef9865fb36ea9da275f. 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/FRX282098213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081fc77607922c326f54dfe0b1308453f8d97e186de18dc3010f05c5fa143a2. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX872142584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b88c85ab96440440393f8b2175644bc6146684f159dbdaadacb461003981cb. 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/FRX452244186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec85005c5a0144864ef59fe91125e75e22e90a4d1155ffe9411253d058ece01. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2X42375354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4f234a9f8951aa7efb12e1368d2377c74a5e756cb452fa02719d515d512d1. 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/FR2X42375355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0bfd05247d82e9d7ded7b6366166c62fb5ab01b3fa8977e013a61b7b41ff1. 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/FR2X42375356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f4704713e021757006746aba5e00471560e8e7c9dec7e9f432536c947b154. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:25Z), 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/FR2X42375358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047159bbe4440c8b8ebc85d2750a204c31d0935fb31d481d544f3af6d4e62f2f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR96X2210581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194ccf4c435eb9241a29c9fe7f1b56ffaecf8f95fca3e536c3564f506c148b2c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:40:54Z), 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/FR2X42375360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c23497341c726ccc4cdbd212e53e640a7791bc501be715688064731ded2c137. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/RUAGT2338743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17ae0755bd237a3c0ee450108525f766498cee64fe09b51d1e73e752ee14542. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUAGT2341564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ca5dfac0ad23eb991c5a6a7f8e85d27bbd948b42f76c762e6032f3ea5b4eb7. 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/RUAGT2364178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e985c0f1793cdbdb042aef2710d6997149701d3e1b83b64c98bafc518f35556. 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/RUAGT2440803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65553bbbfce93003f818984511f4b69c324f2ac31b3b5bc46017358749bab2c2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:11Z), 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/RUAGT2440804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cee00f07374b2e9e1615319d32647c2399d0e57bfae26575d917cb0186ce08. 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/RUAGT2440805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48adcb99367bc8ec59149c629e175ead4d1727262f06e2b16cfd19d705c9c73a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUAGT2533884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b67e1633d3dd051acf822f7a5ea1d43b72e1bbe2e6d74c904c1cd2599a5a65. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:16Z), 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/RUAGT2555541.