Shackled may refer to: Shackled (1918 film), a silent American film Shackled (2012 British film), a short British film Shackled (2012 Indonesian film), an Indonesian horror film See also Shackle
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c5f39792e81225ffe25b759840a94892243db5ed0d00ec22699507c658d61. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3af65d9-2d39-47e8-9d24-ea6efee07fbb.json and https://artists.proofprofile.net/proofs/artist/d3af65d9-2d39-47e8-9d24-ea6efee07fbb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb55faec41ebbb254734ff447343655cd77f182e4b3c095a8e3b53f835d8feb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCAFA2048727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c7aaa959d4937ded9257bc396f2fbb8bc207c162e5762bb9a07f3d4590012c. 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/TCAFA2048729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7846dad8f92b17dc5dea727f4e4f6aa11a5212bab38a255581faa89a710563. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/TCAFA2048730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b931eb4c81aad04a5cec1bb232152e822a9b12c8f9a4fc09c4f2d6f444a56f7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAFA2048733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721d99196f653f05a1cfe36a6465af34ea3eeb2f55ea79f0f39b4b73eed9263. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFA2048735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ddc8ebe76c302260f2a404485f9edb45b84e0134809cbcc73166434a5227f2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCAFA2048737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c30712479d525e494825cdc3a4cabac887c43b239c933d4355c212a94cc7bef. 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/TCAFA2048738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7955246ea00473360e929173813d76773825525410f7ca02941d81b2e70071b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFA2048739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794c4591f6e255b7386c675a1f5e44325cde006fecc6aae95a01a1a4a94e3947. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFA2048740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e085f57ab64baaa3ffb323c341e4b55dd69513b310abf5b4a004068efac5cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAFA2048742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e54f27aa44b7327e9e2d71353beb712600ef92d89c0d404fb59ae9151c7f26. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TCAFA2048745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e2e9484c179f5007806daa6dc26d9a70fe1c6a9db22e0440d09213e4a01209. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAFA2048747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b72f3368ea9c292abdb4ee11619f17088ce969ed2266f7fd4774de0950a398. 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/TCAFA2048749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e13c098a09cb2c56b6437e46bbd794a9553923c821ccd11e0fbc4706e1ecf7a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCAFA2048756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522db172b8f618b35442b354008cfe9b0672f165b555e928b0345263cc6d9ce6. 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/QZNWR2100822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105105f201f23ee8731c135338388e765298d43256c74ba4f8cdd31c2636be2a. 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/QZNWR2100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6ca6cb1ceb8fd1d548ad5ccab8ea808af1beba8256ca7ed4e8bee1513efd83. 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/QZNWR2100824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d303cc24acd824b5eb5037a32f416d10324f59943c054722d0f8ab92bcf5a92. 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/QZNWR2100825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74991bbad544e46b6ba47b18dd5dbc6932a87a4849336c43daa2936992c33380. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZNWR2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271bb01cc05e7c13dfe77cbbc27497487e0d7fd9e8fcc71bbf59bb624ab37d53. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZNWR2100827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dcd4b2328e794fb357380c3abe534cebfbb6ffd0516bef04a7dbff033ed760. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZNWR2100828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671ad3041d36808263c3c0af7d28453c59763824885cac30e514c21c28729246. 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/QZNWR2100829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105105f201f23ee8731c135338388e765298d43256c74ba4f8cdd31c2636be2a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWR2100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ae54151a4b946985cb7ef0504c4b3d1c4252e21f4e40ca7e9c29fd940e64de. 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/QZFZ21987893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c9068bfd0114b7786d7fa0648e7c08eed529cdb569ab09f88257916140ca0. 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/QZFZ21987894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764baa5ba38ed412cf47c3f7d7657f15f3d334a80d0938ea40b2917f876d19f7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ21987895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd408705fd4831f21120a28d734fff97bd638bb81a7079b19ba9457b9fc8cf619. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZFZ21987896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7aebe4563f2a2fa7889151a0a23b296a7f9795e4358e18d208047a2dede92. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZFZ21987897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080847434e67833c394adbe0351c19902b7767865f1e65adc5806f2a1536b04. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM2PV1827450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984232241705a4caffe1544460b0c89b9e26cd2cd8f71cae6d5cbcb0f2e5e507. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QM2PV1827451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0890a4d596a944e3e98ebf2f1aff6bea3dba4ac4bbe0064e459129d2cab49f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCADQ1826266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bef9903ac8b0024f76aa5b6e27b35b4a8ee6db714759870a65779f0ab253791. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCADQ1826268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81c7245e772a5143f1d7a1e0218c4ea0148942e3ee51d911fc443ed5971ad2a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCADQ1826272.