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 0x00f25cfaa612d04821111d9f2cfc8af9256a60892d042bb7c795c63331f7f8a5. 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/6b87caaf-07cf-4b8c-a767-d5ec9873804a.json and https://artists.proofprofile.net/proofs/artist/6b87caaf-07cf-4b8c-a767-d5ec9873804a.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 0x3687f614a7a42703928950523257f4203ce3f15b1d0e064b33830fa7978dea77. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:32Z), 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/QZK6P2203523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ca15ee6d2bd0e37b26c0a2be9bdd908c1eb04811ab2d7842e7e37753cd88cb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:53:02Z), 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/QZK6P2203525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc899afd0f274c64ec98d8c4ce5259bbbe11a7f0fbfa723094ef5b2233bb81be0. 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/QZK6P2203527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c222a4be011168c731f3e88f0c8f9a2104aa898418d6883f0b6f058bdd47de6. 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/QZK6P2203528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611989e93ef16d834c8de94378a526e1bfbf7bbbd84538eee0ae0ac7f0f11f62. 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/QZK6P2203529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b4dc2508425b40909b112436e6eec388e9ba016ed920d915ef9f453e47f58. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:40Z), 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/QZK6P2203530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b0d1f545862dbda09df3bdb081b700fd101022425ed6aaa4579cdaba2674fa. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6P2204298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f58705285b6d0aa7269c4d845fa74322bf3c744efd1d1f632a69285e355c519. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6P2204300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2faec82795dc48f8cf2ea3173b5e4996aa6beed315e742e0702896ff073b19c. 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/QZK6P2204301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f288c3d50cea8205deda91d308a94a274a4f08ed0370e64cb173baa74db79a. 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/QZK6P2204303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117a3d2d02abd42f4e8bed85570f93603cc916c4475cb8244e2a245980366ee0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6P2203533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce434ac51db5ba32635c3bfcf48d00fa5023119910943fe9ca588279835fb91. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6P2203535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b626d71d40570653f7af2b1a83f3e3d7ecc642ecff74a8a7d52ce09f787bc66. 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/QZK6P2203537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a71b426461cabb0710881782821933949a5b48eb9fd714404b7b4cf8945f8ab. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6P2204306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d27dc2ce43ce57876c22e8264ce08588c24b02387ca0dc952689f74f72818a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6P2223549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae46520c201dd840f3c38cb5b931067d8bc15f0fe59736f832086dcc2aad4d1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6P2223551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a614571f5c69348ba0084170c3890903cfc75aef18dd60a85c3b8bfac3dc188. 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/QZK6P2223552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1219dbe1d9a2f00d99c0be127883f305a528999fdb7442bf522f17da57a3b8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:36Z), 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/QZK6P2223553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b9c88536107c382f246de322c3efb5ab277a7c9673e3e89cb32379fb51be0b. 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/QZK6P2223554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b62ca634bdef570e369386ba6db973a3fc2967b75cab4157a81df723ce5118. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:02Z), 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/QZK6P2222511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d787e97e59f72c03772e511cc7bb67aa7b694da0efcca9d8ce2f7e2635b338d. 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/QZK6P2222512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfe515dcdea4b3f2a37b22f683c2c8d9a090117a0bf670c7ea29c855e4d4b3a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:50Z), 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/QZK6P2222513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94872bb089782272e6c2d6fc255f437e5cc22b5d04f653aee893cdfe9f3edae6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6P2222514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf12b91bdf4fadd0e5d43f8d7b75ebd29d1924b0aac37dc140662917184f2cfb. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZK6P2222515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa457f63660627e008d5a54ac22216e3f100d107268e495ed9a2af8f2f65de328. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEM2299680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7025438ba8f593cf5fcb1012b436cc84ed867cafbf515990ab8fa3691fb167c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEM2299681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca758e6f6310bd2a382a8388a1fa6d691537759dec766d8f909bd6171e5bbc. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZMEM2299683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff613d84134e34539c72456613faf27e0bc00fd4d2dfd29f6f431cacaca99302. 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/QZMEM2299684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3bbf186154373cc1d0a23366ead9ada1265f8eff9ccdf2d2836f49e389118. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:18Z), 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/QZMEM2299687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837ed071915fe434719273c10f85773fa7d8106db205b7cec31b192b6b639e89. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ762418530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2411d75e159b7ab89ae23a5cc7ca88f2435ebc78155540312e04605d331a6492. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ762418531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa896df2b44c59003f026c21220565c95a0059ac38adec320f09bdb6766bd2a5c. 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/QZZ762418532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de08acfc028e7bc1cbae6d13f47dd6a8ef601de2161c10105e6e2a2df93018. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZZ762418533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f70a4f4855c7a9cd5124209a9ed92999cc02926de4f9f72feb05ef08cf61d95. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZZ762418536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6061b2233c55b3a47005e7a902e2b98c0c9b7a4666c9a2fb7dbba939e38603c. 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/QZZ762418537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787485065fe69fc0209902d80fce8f2374a93e10a650bf249e3169a2b84d0887. 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/QZZ762418539.