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 0x07c9a087d41656fd6288550187b22157d88f9d515decb6f46fd87203f7314a0f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5834758d-54ec-4940-9d44-ba4aaa535d55.json and https://artists.proofprofile.net/proofs/artist/5834758d-54ec-4940-9d44-ba4aaa535d55.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 0xcfdb88f3f14c67ff0f4d7794adc6d7c4bf7f72d3186b937d6ccaf89535fe3b6c. 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/CAL451676003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34247d9a86543c77a1a2f869090baa75e57d7641d83ad5c920c02d1724173b1. 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/CAL451802502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3675950508c6380ff2ca7881bd0dff93e28ed8ac02f01d34d3f5bcafadd4cb0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:54Z), 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/CAL451802510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf405d22d14632acb36828394dedef637938174260c77f7deaadd5de74108ce. 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/CAL452103401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3debea00247e3a2f02d403926c28b416911bcc1480a82f4539a58467b1f87dbe. 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/CAL452067001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162ad124b5c343c369800d18619dcf66278002f70546bca49a5490d5a67e659e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL452314101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02437c2dce3afbbe80e1f4c1aaf657dcfb48922a14319545060ab83344001c2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAL452314102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205b7f16ae3dcaae148f32550e0b2d6883bd80df61c7267fbabb72613679293a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAL452205801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac53abac082f75a187e0dfc89fefe8af030bc57206349dd58fa11073366f8c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAL452314104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf405d22d14632acb36828394dedef637938174260c77f7deaadd5de74108ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAL452103401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15babf464c1191fab570901d16392fef0292a885769181f9b693f126bdd6f37. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAL452315301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54346648fda10b507040167019bcbca453fb5826cdcb7cbc0537f357d01b3fd2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAL452314107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb732a6d9bfc6ec2c392396336c5a1d1674c18c25bdd04c87ae6e8e10691688c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAL452314108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3debea00247e3a2f02d403926c28b416911bcc1480a82f4539a58467b1f87dbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAL452067001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d2184478059483b72a065ccb3454e6bf6dc8b37da74c3361e193e7e1c6ba43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL452314201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5420d8f4b8937c3184b4a2cf193d7a601a47802ae0198d1e6b2139ff4ba933. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL452314111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebe7289d7e2513d1c3de7d61b9fa6e43356488819e6be2ac7f546318f780c69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAL452315302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfdd8f90e8241e75d241961b86ad9fbb18c0b3d255f219d7e968732e04b76bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAL452314113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f09847f47e7ee51b669e1026be7302750e0c03aca23a79daf8f5c0273ac2416. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAL452314114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e57c2242cf15eae82c34472375a39eabea8c6906703f89058d3c98cbb8e8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CAL452213301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6cdb9c8bad81952af1fc634e9d0b48ae0541241a0a991febfdef1f1bf029a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAL452314116.
Holding Up The World (feat. Harrison & Albin Myers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309bf0023c673691103f5eea74b2fecf49a890fa805229de87a0ef7dedf28b39. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUS11203341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8366519ee288a1cc2331f1dc559d776d224e4c7d6a5491db4b325528353f03a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAAA12063202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8366519ee288a1cc2331f1dc559d776d224e4c7d6a5491db4b325528353f03a. 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/CAAA12063202.