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 0xe8707db9c16e84cee45d22ab61c2d6bb0efa56010cee598910aee97e555ef858. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2731bf46-250b-4aa0-b116-829b399634ea.json and https://artists.proofprofile.net/proofs/artist/2731bf46-250b-4aa0-b116-829b399634ea.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 0x81a496ec89bacfee0137097a854a9a0108d5417c4f6f347d58ce6b4e6c5dae79. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:08Z), 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/CZK361301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c04b83c2cade13fe9f248013481cc12e8d9bef5e33b3816c95e8317b35d9d9. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/CZK361301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de910cce50b25db1b6b16edb2edebd59260f5485cb9ee3f6c42efe659a3992. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CZK361301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7076c060297f855fce5c2da926e83386073bf620edbd3cb0538b08a4671c32. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/CZK361301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f90bdf81b4afcd634f5563f5ee0b00009d9d200805a052cbb9c9c1e7490cc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:35:05Z), 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/CZK361301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1279fa73d3dbdfe6ff6c6a3ce02272447125fa1c00818af9209634887dc888. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:11:07Z), 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/CZK361301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60f0db9cec4a60c369119e26dbedee39ee4ff657570fb3f0a94d4b8617398b0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZK361802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e357e7687778676d68e0fcbeede36e5e5c46de171d73507453fd3edd6b2ac3. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CZK361802006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a170e9cb7a9e338814d0ba3cd49fb891ebf19bf585b5116ce7b10a2990d258. 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/CZK361802007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c00b66445540dc6bce7fe78a03eccc2f1b5b733215e721d31539fb602f636df. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CZK361802008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1babb9d3b46db9905a9da58abbb761c7521e14c0a9f7d1292e8873a17a7801. 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/CZK361802013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3791d736b4f0caaec1606f3cdfb39310bd4b8be939136511ed3db1d5b58745f. 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/CZK361903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04a9fb506d7eedf9dc9da758448acf3116fc81b04685072d8958b9e22abecd1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CZK361903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8738101318da9a292e29ab072fc4f8f9b4bc38084c49f6f6ce5499583bc410d3. 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/CZK361903009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13871fc4619830567585627eabe22ce3912f864c5f29b8e3ac374bb303151007. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/CZK361903010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299dcc8fdc230218a45995a2d81423170d907b0df1eb4b2a3c1f488398177682. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAFF2008209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279d9f5646517aed0c1020141c274a5e1c6d189a4f2a5ee2950fa86bf843e2a8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CZK362207004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6849ec1e21d43b83a9a4795f3846c2e291fdaaa1b6e5faa7a605a4d47cb84eb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:17:56Z), 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/CZK362207006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543f44bf510dde4ef743fda4991e016255d2795e5c5f253fd6da3006de004974. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:29Z), 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/CZK362207008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a6122806e925d3388add8de4b29519e59f088652f087a48fcac4bbbf51c140. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:46Z), 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/TCAHS2352156.
Could We Start Again: Jesus Christ Suprestar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef8a96f6bd1b89412ee1d5b79e71909cc99a974080396933c42e844921cbe7a. 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/CZK362408003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8a5748f07bfb456eee67c6ea4116aec11c215bc87f288dfeba8e82abe9d367. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CZK362408005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f1d6a8b0eb4af5a9e510f3f6c34467dd97cb626f25f2311811df6011af95a. 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/CZK362408007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa6c5d18a6e527aafd7000293262ef119186dea7bcda1ebb4039e951b23c84b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZK362408008.