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 0x03d9fc6f65b891b7d8441d7fe35684c72417b58ccd8eb440f587fc64a7db8a06. 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/3b2a4048-b1d2-4684-8d01-611a29a32b09.json and https://artists.proofprofile.net/proofs/artist/3b2a4048-b1d2-4684-8d01-611a29a32b09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arthur le coureur des bois dans sa nouvelle aventure !, vol. 3
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 0xb3d5cc3ede9477281923dbdee0dc6a41fca7f7c0f74ddc62fad5324d44cb4eac. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:20Z), 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/CA83V1200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6071ae220401d4f5c3b159d72f8e811f28cf059348ee8bb340f8429d71ea3b. 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/CA83V1200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b4cefdab33b59c85f26c02c64fd45eade6988d15be49bf54887823195622c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:25Z), 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/CA83V1200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac76e182ef171218f743bc175ad0625339823852bc17bc1539b9d8f3e2ea57b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA83V1200902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a88ce1bc6d918ad13d83d3f4e325b63ba87cb2d6e07630450a1baa9195c2a59. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CA83V1200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d57e9b23f390e9c9be07fe844cb8f6f8c9eec22f6f28e1ba5929a3947880a7b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:25Z), 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/CA83V1200905.
Arthur l'aventurier à la découverte des rocheuses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa038cfa5489b04298b70ba1f6c3258bdc03c194440969d5da2c3ebf2bbc563. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CA83V1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c53644a732532cb60aa709fa96bf6fe57d4ef34489932afcbd0c86b5578b34d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CA83V1700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d388f0006f6b4c268878355b275d4110756d3cd848ce6663d733977fb38589. 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/CA83V1700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1e97de6cb754963aecb3b6f76d8a8c9f31be7d877190c49d3732ce9dbe184f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/CA83V1700106.
Arthur l'aventurier au bout du monde en Australie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ebee67cf4777fb4379e7f43ef52fb24b8fb92959a2e330f11dba58f3ace1e. 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/CA83W1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272c49525768ac9c2e6f29036571e2359fda5df997a1d8851f29a53de2df431e. 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/CA83W1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac98f3b1e90b7dc67fbe4d45d56feb2ad42e202a9be22ee2dda483f050598340. 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/CA83W1400005.
Arthur L'aventurier les trésors du Maroc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa03d79d0fd9b1ec9c46620929d5f39ecac66b1c70523737c8ad88099d99992. 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/CA83W1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec9cd13bbc762b90d87564e8e8fcd84b706c82903372b759854b54f7e3dcd97. 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/CA83V1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21349a0621b006016d9660e68cc5c80e2ff4733cf13d85206b811cdd8c82ceb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:21:10Z), 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/CA83V1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f81be8aee5aaf34e627bc81769307407832a2c2f71d05ada598b577045ce9d1. 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/CA83V1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46414362f68dd699fe4445aa54941789e1a889eb0d35ccb3c8d1f7e5d5847736. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CA83V1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95eb62b26e23ac04496b0b2c617be7d4f8fa1473c5ca2d814e72e1af26aa138. 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/CA83V1500009.